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Guide to Races in Colorado

Featured Events

Winter Running Series
Winter 2017-2018


Chilly Cheeks Winter Duathlon Series
Winter 2017-2018


Superior Stocking Run
Dec. 17, 2017


Yeti Chase 5K/10K
Jan. 28, 2018


Ralston Creek Half Marathon & 5K
Feb. 18, 2018


Three Creeks Half Marathon
April 22, 2018

Barkin' Dog Duathlon
May 6, 2018


Mt. Evans Ascent
June 9, 2018


Evergreen Sprint Triathlon
July 22, 2018


Littlefoot Triathlon
Sept. 15, 2018


Winter Running Series
Winter 2017-2018


Chilly Cheeks Winter Duathlon Series
Winter 2017-2018


Superior Stocking Run
Dec. 17, 2017


Yeti Chase 5K/10K
Jan. 28, 2018


Ralston Creek Half Marathon & 5K
Feb. 18, 2018


January 2018

  • 1 Arvada Resolute Runner 5k, Memorial Park, Arvada, Colorado, 10:00 a.m., 720.722.4226
  • 1 CS Full Moon Run, various distances, Beckers & El Paso, Manitou Springs, Colorado, 7:00 p.m., 719.599.3583
  • 1 CS Rescue Run, 5k/10k, Palmer Park, Colorado Springs, Colorado, 10:00 a.m., 719.351.0045
  • 1 Parker Commitment Day 5k, Lifetime Fitness Gym, Parker, Colorado, 10:00 a.m., 203.313.7884
  • 1 Salida New Years 5k, Scout Hut (E Sacket Ave), Salida, Colorado, 10:00 a.m., 719.539.6738
  • 1 Westminster Commitment Day Run, 5k, Lifetime Fitness Gym, Westminster, Colorado, 10:00 a.m., 303.429.8000
  • 3 PPRR Winter Series #1 ? Hells Hills, 3.3M/7M, Cheyenne Mountain State Park, Colorado Springs, Colorado, 10:00 a.m., 719.338.8639
  • 6 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 6 6Pack Winter Series #1, 1M/5k, Promenade Terrace, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 6 The Resolve, 5k/10k, City Park, Denver, Colorado, 9:00 a.m., 720.365.2935
  • 6 CMRA Lake Arbor Run, 5k, Lake Arbor, Arvada, Colorado, 10:00 a.m., 303.422.3745
  • 7 HR 6Pack Series #1, 1M/5k, Heritage Regional Park, Highlands Ranch, Colorado, 9:00 a.m., 720.722.4226
  • 7 RMRR Platte River Trailhead Run, 5k/10k, Platte River Trailhead, Denver, Colorado, 9:00 a.m., 303.871.8366
  • 13 Chilly Cheeks 4 Mile Run #2, Cherry Creek State Park, Hobie Hill Lot, Denver, Colorado, 10:00 a.m., 303.642.7917

  • 20 Frostys Frozen Five & Ten, 5k/10k,, Hudson Gardens, Littleton, Colorado, 720.985.9047
  • 20 Appleton Freezer, 4M, Appleton Elementary School, Grand Junction, Colorado, 11:00 a.m., 970.254.6400
  • 20 Polar Bear Run and Plunge, 5k, Horsetooth Reservoir, Fort Collins, Colorado, 10:00 a.m., 970.556.3279
  • 20 6Pack Winter Series #2, 2M/5k, Promenade Terrace, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 21 Polar Bear 5k, Washington Park, Denver, Colorado, 10:00 a.m., 303.694.2202
  • 21 HR 6Pack Series #2, 2M/5k, Heritage Regional Park, Highlands Ranch, Colorado, 9:00 a.m., 720.722.4226
  • 27 PPRR Winter Series #2 Over the River, 4M/8M, Norris Penrose Event Center, Colorado Springs, Colorado, 10:00 a.m., 719.338.8639
  • 27 Sourdough Snowshoe Race, 11.4M/30k, South Sourdough Trailhead, Nederland, Colorado, 9:00 a.m., 303.345.4785
  • 28 Yeti Chase 5k/10k, Bear Creek Lake Park, Morrison, Colorado, 10:00 a.m., 303.642.7917

  • 31 Full Moon Run, various distances, Beckers & El Paso, Manitou Springs, Colorado, 7:00 p.m., 719.599.3583

February 2018

  • 3 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 3 6Pack Winter Series #3, 5k, Promenade Terrace, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 3 Freeze Your Buns Off 5k, Douglas County Events Center, Castle Rock, Colorado, 9:00 a.m., 303.588.1452
  • 4 HR 6Pack Series #3, 5k, Heritage Regional Park, Highlands Ranch, Colorado, 9:00 a.m., 720.722.4226
  • 4 Super Bowl 5k, Washington Park, Denver, Colorado, 10:00 a.m., 303.694.2202
  • 4 Super Half Marathon & 5k, Plaza of the Rockies, Colorado Springs, Colorado, 10:00 a.m., 719.598.2953
  • 4 Super Sunday Run, 5k, Platte River Bar & Grill, Littleton, Colorado, 10:00 a.m., 303.483.7036
  • 10 PPRR Winter Series #3, 5M/10M, El Pomar Youth Sports Park, Colorado Springs, Colorado, 10:00 a.m., 719.338.8639
  • 10 Catch Me if you Can, 5k, Anheuser Busch, Fort Collins, Colorado, 9:00 a.m., 970.556.3279
  • 10 Heart Throb 5k, Sandstone Park, Longmont, Colorado, 10:00 a.m., 720.722.4226
  • 10 Le Cours de la Amour, 5k/10k, City Park, Denver, Colorado, 9:00 a.m., 720.365.2935
  • 10 Sweetheart Stroll, 1.5M/5k, Community Build Lot, Lamar, Colorado, 10:00 a.m., 719.336.4375
  • 10 CMRA Forty Furlongs, 5M, Roadrunner Sports, Broomfield, Colorado, 10:00 a.m., 720.936.7860
  • 10 Sweetheart Classic, 4M, Loveland High School, Loveland, Colorado, 9:00 a.m., 970.219.9844
  • 11 Valentines Day 5k, Washington Park, Denver, Colorado, 10:00 a.m., 303.694.2202
  • 11 RMRR Platt River Run, 5k/7M, Platt River Bar & Grill, Littleton, Colorado, 10:00 a.m., 303.798.7515
  • 17 Sweetheart Run, 5k/10k, Community Center, Fruita, Colorado, 10:00 a.m., 970.858.0360
  • 17 Valentines Day Massacre Prediction Run, 3M, Bottom of Roosevale Road, Grand Junction, Colorado, 10:00 a.m., 970.589.6180
  • 18 Ralston Creek Half Marathon & 5k, 64th & Fig St, Arvada, Colorado, 10:00 a.m., 303.642.7917

  • 24 Chilly Cheeks 4 Mile Run #3, Cherry Creek State Park, Hobie Hill Lot, Denver, Colorado, 10:00 a.m., 303.642.7917

  • 24 PPRR Winter Series #4 Valley of the Dogs, 10k/20k, Wolford Elementary School, Black Forest, Colorado, 10:00 a.m., 719.338.8639
  • 24 The Heronry, 5k/10k, Chatfield State Park, Littleton, Colorado, 9:00 a.m., 720.628.2009
  • 24 Cupids Undie Run, 5k, McNicholas Civic Center Building, Denver, Colorado, 2:00 p.m., 212.344.6633
  • 25 Pueblo Marathon & Half Marathon, North Marina, Lake Pueblo State Park, Pueblo, Colorado, 10:00 a.m., 719.429.9501
  • 25 Powder and Porters Run, 4.5M, Evergreen Brewery and Taphouse, Evergreen, Colorado, 10:00 a.m., 720.536.4821

March 2018

  • 3 DreamCatcher Half Marathon, Riverfront Trail System/Edgewater Tap & Grill, Grand Junction, Colorado, 7:00 a.m., 970.234.8772 (9am-5pm)
  • 3 6Pack Winter Series #5, 5k/5M, Promenade Terrace, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 3 Race to Can Hunger, 2k/5k, Weld Food Bank, Greeley, Colorado, 9:00 a.m., 970.356.2199
  • 3 Animal House Run Fur Fun, 5k, New Belgium Brewing, Fort Collins, Colorado, 10:30 a.m., 970.224.3647
  • 4 Moab Spring Trail Run, 8k/Half, Klondike Bluffs Trails, Moab, Utah, 8:00 a.m., 970.389.4838

  • 4 That Dam Run, 5k/Half, Cherry Creek Dam, Denver, Colorado, 10:00 a.m., 303.694.2202
  • 4 HR 6Pack Series #5, 5k/5M, Heritage Regional Park, Highlands Ranch, Colorado, 9:00 a.m., 720.722.4226
  • 4 Fight For Air Climb, Republic Plaza, Denver, Colorado, 9:00 a.m., 303.388.8708
  • 4 RMRR Crown Hill Park Run, 3M, Crown Hill Park, Lakewood, Colorado, 9:00 a.m., 303.871.8366
  • 4 Spring Run Off, 5k/10k/10M, Dutch Clark Stadium, Pueblo, Colorado, 9:00 a.m., 719.564.9303
  • 10 Lucky Charm Run, 1M/5k/10k, City Park, Denver, Colorado, 8:00 a.m., 720.365.2935
  • 10 Run Through Time, 2M/Half/Marathon, Riverside Park, Salida, Colorado, 8:00 a.m., 719.539.2739
  • 11 Runnin of the Green, 7k, 17th & Wazee, Denver, Colorado, 10:15 a.m., 303.322.9342
  • 11 Polar Plunge Splash & Dash, 5k, City Park, Denver, Colorado, 9:00 a.m., 215.534.2426
  • 17 Erin Go Braugh, 7.77k, Westminster Promenade, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 17 Sharin O the Green, 5k, Library Park, Fort Collins, Colorado, 8:30 a.m., 970.484.7123
  • 17 St Patricks Day 5k, Gold Run Nordic Center, Breckenridge, Colorado, 9:00 a.m., 970.453.1734
  • 17 5k for St Patricks Day, Downtown, Colorado Springs, Colorado, 10:00 a.m., 719.635.8803
  • 18 Lucky Laces, 5k/10k, City Park, Denver, Colorado, 9:00 a.m., 720.365.2935
  • 24 6Pack Winter Series #6, 5k/10k, Promenade Terrace, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 24 CMRA Spring Spree, 10k, Platt River Bar & Grill, Littleton, Colorado, 9:00 a.m., 303.955.8496
  • 24 Rocky Mountain Brew Run, 5k, Oskar Blues Brewery, Longmont, Colorado, 10:00 a.m., 303.776.1914
  • 25 HR 6Pack Series #6, 5k/10k, Heritage Regional Park, Highlands Ranch, Colorado, 9:00 a.m., 720.722.4226
  • 25 Spring Equinox Half Marathon, 4M/Half, Beirgarten Anheuser Busch Brewing, Fort Collins, Colorado, 9:00 a.m., 970.556.3279
  • 31 Hoppin Half, 5k/10k, Central Park, Denver, Colorado, 9:00 a.m., 720.365.2935
  • 31 Dust Bowl Marathons, 5 Days/5 Marathons, Lamar, Colorado, 6:30 a.m., 575.382.8869

April 2018

May 2018


  • 5 Hope House Derby Dash, 5k, Lake Arbor Park, Arvada, Colorado, 9:00 a.m., 303.429.1012 x237

  • 5 Collegiate Peaks Trail Run, 25M/50M, Community Center, Buena Vista, Colorado, 6:30 a.m., 719.395.6612
  • 5 Greenland Trail Races, 8M/25k/50k, Greenland Open Space, Larkspur, Colorado, 7:00 a.m., 720.985.9047
  • 5 May Day 5k, Railroad Park North Shelter, Fort Lupton, Colorado, 8:30 a.m., 303.857.4200 x166
  • 5 Bob Turner Classic, 5k, Turner Middle School, Berthoud, Colorado, 8:00 a.m., 970.613.7400
  • 5Hayden Cog Run, 5k/8.4M, Hayden Town Park, Steamboat Springs, Colorado, 10:00 a.m., 970.879.0880
  • 5 Furry Scurry, 2M, Washington Park, Denver, Colorado, 9:00 a.m., 303.751.5772
  • 5 BT5k, Great Lawn Park, Denver, Colorado, 9:00 a.m., 800.886.1281
  • 5 Blossom Day Run, 5k/5M/Half, Centennial Park, Canon City, Colorado, 8:00 a.m., 719.315.4114
  • 5Grand Valley Mammoth Marathon, Town Center Plaza, Palisade, Colorado, 6:30 a.m., 970.464.9266
  • 6 RMRR Stapleton Run, 5M, Stapleton Central Park, Denver, Colorado, 8:00 a.m., 303.871.8366
  • 6 Run for Remembrance, 5k, Clement Park, Littleton, Colorado, 8:00 a.m., 303.982.4400
  • 6 Colorado Marathon, 5k/10k/Half/Marathon, Fort Collins Transportation Center, Fort Collins, Colorado, 6:00 a.m., 970.227.7384
  • 8 Dash n Dine #4, 5k, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.870.3011
  • 12 Rabbit Valley Half Marathon, Rabbit Valley Trailhead, Fruita, Colorado, 7:15 a.m., 303.249.1112

  • 12 Quad Rock Trail Races, 25M/50M, Lory State Park, Fort Collins, Colorado, 5:30 a.m., 970.404.2074 (permit pending)
  • 12 CMRA XC Challenge, Great Lawn Park, Denver, Colorado, 8:20 a.m., 720.480.2370
  • 12 Running with the Regiment, 4M, East Parking Lot, Loveland High School, Loveland, Colorado, Noon, 970.443.3277
  • 12 Fruita Girls on the Run, 5k, Shelledy Elementary School, Fruita, Colorado, 10:00 a.m., 970.257.9267
  • 12 Edgewater 5k, Citizens Park, Edgewater, Colorado, 720.663.7176
  • 12 Sean May Memorial Run, 5k/9M, Barr Lake State Park, Brighton, Colorado, 9:00 a.m., 303.845.9809
  • 12 Glenwood Springs Walk MS, 5k, No Name Exit, Glenwood Springs, Colorado, 8:00 a.m., 970.257.1831
  • 12 Tommyknocker Ultras, 12 Hrs, White Ranch Open Space, Golden, Colorado, 6:00 a.m., 720.624.9237
  • 12 WomenÕs Distance Festival, 5k, North Monument Valley Park, Colorado Springs, Colorado, 10:00 a.m., 719.635.3833
  • 13 Colorado Womens Classic, 5k/10k/10M, Westminster Promenade, Westminster, Colorado, 8:30 a.m., 720.722.4226
  • 13 Mothers Day 5k, City Park, Denver, Colorado, 9:30 a.m., 303.403.0978
  • 15 Dash n Dine #5, 5k, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.870.3011
  • 19 Carbon Valley Half Marathon & 5k, Half Marathon/Relay/5k, Firestone Sports Complex, Firestone, Colorado, 8:00 a.m., 720.331.4678

  • 19 Spring Sprint, 5k/10k, Willow Creek Park, Lamar, Colorado, 8:00 a.m., 719.336.4376
  • 19 Run to the Shrine, 5k/10k, Cheyenne Mountain Zoo, Colorado Springs, Colorado, 719.633.9925
  • 19 Cottonwood Classic, 5k, Thorncreek Shopping Center, Thornton, Colorado, 8:00 a.m., 303.694.2202
  • 19 Spirit Challenge, 5k/10k, Middle School, Steamboat Springs, Colorado, 9:00 a.m., 970.879.0880
  • 19 Boneyard Boogie, 11k, Eagle Pool & Ice Rink, Eagle, Colorado, 9:00 a.m., 970.479.2280
  • 19 Fear the Deer Trail Run, Half Marathon, Deer Creek Canyon Park, Littleton, Colorado, 8:00 a.m., 720.352.3638
  • 20 Norad Trail Race, 4M/Half/Marathon, Cheyenne Mountain State Park, Colorado Springs, Colorado, 7:00 a.m., 719.429.9501
  • 22 Dash n Dine #6, 5k, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.870.3011
  • 26 High Drive Challenge, 4M/10M, Bear Creek Regional Park, Colorado Springs, Colorado, 7:00 a.m., 719.429.9501
  • 26 Memorial Day Run, 5k/10k/30k, Douglas County High School, Castle Rock, Colorado, 8:00 a.m., 720.425.2978
  • 27 Run for Shelter, 5k/10k, Reynolds Landing Park, Littleton, Colorado, 8:00 a.m., 720.316.6937
  • 28 Colorado Run, 4M/10k, Spring Canyon Park, Fort Collins, Colorado, 8:00 a.m., 970.556.3279
  • 28 Valor Races, 5M/Half/Marathon, Vail Village, Vail, Colorado, 8:00 a.m., 970.445.7076
  • 28 Bolder Boulder, 10k, 30th & Pearl, Boulder, Colorado, 7:00 a.m., 303.444.7223
  • 31 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195

June 2018

  • 2 Into the Wild Running Festival, Half/Marathon/Ultra, Wild Animal Sanctuary, Keenesburg, Colorado, 6:00 a.m., 303.536.0118
  • 2 North Fork Runs, 50k/50M, Pine Valley Ranch Park, Pine, Colorado, 7:00 a.m., 303.903.3533
  • 2 Golden Gate Dirty 30, 12M/50k, Golden Gate Park, Black Hawk, Colorado, 6:00 a.m., 303.990.9049
  • 2 Steamboat Marathon, 10k/Half/Marathon, 8th & Oak, Steamboat Springs, Colorado, 7:30 a.m., 970.285.3550
  • 2 The Beer Relay, 6 hrs, Bohn Park, Lyons, Colorado, 10:00 a.m., 401.580.9548
  • 2 Hardscrabble Mountain Trail Run, 5k/10k, Bear Basin Ranch, Westcliffe, Colorado, 10:00 a.m., 719.783.3018
  • 2 Run for the Door, 5k, Cheeseman Park, Denver, Colorado, 8:30 a.m., 303.830.2201
  • 2 Run the Rockies Trail Race, 10k/Half, Frisco Adventure Park, Frisco, Colorado, 8:00 a.m., 970.668.9133
  • 2 Cattle Crossing Run, 5k, Tallman Meadow Park, Parker, Colorado, 8:00 a.m., 303.805.6304
  • 2 Elk Meadow Trail Race, 5k/10k, Buchanan Park Recreation Center, Evergreen, Colorado, 8:00 a.m., 720.880.1000
  • 3 Palmer Lake Races, 10k/Half, Palmer Lake, Colorado, 8:00 a.m., 858.775.7104
  • 3 Skirt Sports 13er, 5k/10k/Half, Home Depot, Louisville, Colorado, 6:45 a.m., 720.722.4226
  • 3 RMRR Bible Park Run, 4k, Bible Park, Denver, Colorado, 8:00 a.m., 303.871.8366
  • 7 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 8 Ragnar Trail Relay, 120M, Snowmass, Colorado, 801.499.5024
  • 9 Mt Evans Ascent, 14.5M, Mt Evans, Idaho Springs, Colorado, 7:30 a.m., 303.642.7917
  • 9 Mueller Marathon, 25k/Marathon, Mueller State Park, Divide, Colorado, 7:00 a.m., 719.429.9501
  • 9 Southpark Trail Runs, 15M/28M, South Park City, Fairplay, Colorado, 8:00 a.m., 720.624.9237
  • 9 Runoff Runoff, 6k/Half/Marathon, Ball Park, Creede, Colorado, 8:00 a.m., 719.589.2230
  • 9 CMRA Elk Meadow Trail Run, 9k, Elk Meadow, Evergreen, Colorado, 8:00 a.m., 303.550.8014
  • 9, South Park Trail Marathon, Half/Marathon, South Park City, Fairplay, Colorado, 8:00 a.m., 720.624.9237
  • 10 Garden of the Gods Run, 10k/10M, Garden of the Gods, Manitou Springs, Colorado, 7:00 a.m., 719.473.2625
  • 10 FiBark Tenderfoot Mountain Hill Climb, 2M, Tenderfoot Mountain, Salida, Colorado, 6:00 p.m., 719.539.6738
  • 14 Boulder Stroke & Stride Run, 5k, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 14 Summer 6Pack Series #1, 1M/5k, Westminster City Park, Westminster, Colorado, 6:30 p.m., 720.722.4226
  • 16 FiBark Road Races, 5k/10k, Thonhoff Park, Salida, Colorado, 8:00 a.m., 719.539.6738
  • 16 Bacon Burner, 6k, Marina, Frisco, Colorado, 9:30 a.m., 970.668.9133
  • 16 Leadville Trail Marathon & Half, 6th Street Gym, Leadville, Colorado, 8:00 a.m., 719.219.9351
  • 16 Eagle Half & 10k, Brush Creek Elementary School, Eagle, Colorado, 8:00 a.m., 720.835.9141
  • 16 Howelsen 8 Miler, 4M/8M, Olympian Hall, Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 17 Estes Park Races, 5k/10k/Half Marathon/Marathon, Middle & High Schools, Estes Park, Colorado, 6:00 a.m., 970.214.4128
  • 17 FiBark Trail Race, 10k, Arkansas Hills Trail System F Street Bridge, Salida, Colorado, 8:00 a.m., 719.539.6738
  • 17 Fathers Day Run, 5k/10k/Half, Central Park, Denver, Colorado, 8:00 a.m., 720.365.2935
  • 17 Fathers Day Run, 5k/10k, Apex Center, Arvada, Colorado, 8:00 a.m., 720.722.4226
  • 21 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 23 Slacker Races, 4M/Half, Loveland Ski Area, Georgetown, Colorado, 8:00 a.m., 303.679.2312

  • 23 Climb for Courage, 2700 stairs, Falcon Stadium, USAFA, Colorado, 8:39 a.m., 719.266.3021
  • 23 San Juan Solstice Run, 50M, Town Armory, Lake City, Colorado, 5:00 a.m., 970.944.2269
  • 23 Mountain Ridge Half Marathon, 10k/Half, Mountain Ridge Middle School, Highlands Ranch, Colorado, 7:30 a.m., 720.835.9141
  • 24 Run the Ridge, 5k, The Ridge at Castle Pines, Castle Pines, Colorado, 8:00 a.m., 303.717.2920

  • 26 Mountain Goat Kids Trail Running Series, 0.5M/1.5M/5k, Frisco Day Lodge, Frisco, Colorado, 5:45 p.m., 970.668.9133
  • 28 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 28 Summer 6Pack Series #2, 2M/5k, Westminster City Park, Westminster, Colorado, 6:30 p.m., 720.722.4226

July 2018

  • 1 Mountain Madness, 10k/Half, Howelsen Hill, Steamboat Springs, Colorado, 7:30 a.m., 970.879.0880
  • 4 Georgetown Tom Hayden Memorial 4th Run, 5k, Strausse Park, Georgetown, Colorado, 8:00 a.m., 303.679.2426

  • 4 Breckenridge Independence Day Trail run, 10k, Carter Park, Breckenridge, Colorado, 7:00 a.m., 970.453.1734
  • 4 Denver Liberty Run, 4M, Washington Park, Denver, Colorado, 8:30 a.m., 303.522.4387
  • 4 Erie Firecracker Run, 4k/4M, Community Center, Erie, Colorado, 8:00 a.m., 814.454.7191
  • 4 Fort Collins Firecracker 5k, City Park, Fort Collins, Colorado, 7:30 a.m., 970.556.3279
  • 4 Longmont Half & 5k, McIntosh Lake, Longmont, Colorado, 6:00 a.m., 720.722.4226
  • 4 Louisville Let Freedom Run, 5k/10k/Kids, Streets Fitness, Louisville, Colorado, 8:00 a.m., 970.449.2051
  • 7 Evergreen Mountain Trail Run, 15k, Alderfer Three Sisters Park, Evergreen, Colorado, 8:00 a.m., 720.880.1226
  • 7 Silverheels Endurance Run, 100M, Cohen Park, Fairplay, Colorado, 4:00 a.m., 720.624.9237
  • 7 CMRA White Ranch Trail Run, 10k, White Ranch, Golden, Colorado, 8:00 a.m., 303.554.0870
  • 7 Walk, Run & Wag 5k, Sloans Lake, Denver, Colorado, 8:00 a.m., 303.287.3277
  • 7 Hahns Peak Hill Climb, 7.3M, The Cabins at Historic Columbine General Store, Steamboat Springs, Colorado, 9:30 a.m., 303.915.0396
  • 8 Summer Roundup Trail run, 12k, Bear Creek Park, Colorado Springs, Colorado, 7:00 a.m., 719.473.2625
  • 8 Sliver Rush 50 Run, 50M, Dutch Henry Hill, Leadville, Colorado, 9:00 a.m., 719.219.9351
  • 8 Last Call 50 Miler, 50M, Cohen Park, Fairplay, Colorado, 12:00 a.m., 720.624.9237
  • 8 RMRR Stone House Run, 2M/2.4M, Stone House, Lakewood, Colorado, 8:00 a.m., 303.871.8366
  • 10 Mountain Goats Kids Trail Running Series, 0.5M/1.5M/5k, Frisco Day Lodge, Frisco, Colorado, 5:45 p.m., 970.668.9133
  • 12 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 12 Summer 6Pack #3, 5k, Westminster City Park, Westminster, Colorado, 6:30 p.m., 720.722.4226
  • 14 Grand Lake Buffalo Stampede, 5k, Park Avenue (behind Town Park), Grand Lake, Colorado, 8:30 a.m., 970.627.3402 x202

  • 14 Grin & Bear it Trail Run, 9.3M, Nordic Center, Crested Butte, 9:00 a.m., 970.349.1707 x4
  • 14 Sand Creek Half Marathon, 5k/10k/Half, Stapleton Central Park, Denver, Colorado, 7:00 a.m., 720.365.2935
  • 14 Aspen Valley Marathon, 5k/Marathon, Wagner Park, Aspen, Colorado, 7:00 a.m., 970.309.7214
  • 15 Mountain Running Series, 5k/10k/Half/50k, Copper Mountain, Colorado, 8:00 a.m., 303.877.1379
  • 21 Prairie Dog Races, 5k/10k/Half, Middle School, Castle Rock, Colorado, 8:00 a.m., 720.722.4226
  • 22 Black Hawk Trail Races, 10k/Half, Golden Gate State Park, Nott Creek Trail, Golden, Colorado, 858.259.1501
  • 26 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 26 Summer 6Packs #4, 5k/4M, Westminster City Park, Westminster, Colorado, 6:30 p.m., 720.722.4226
  • 28 Elevation 5k, West Jeff Elementary School, Conifer, Colorado, 8:00 a.m., 303.982.5255

  • 28 Eldora Trail 10k, Eldora Ski Area, Nederland, Colorado, 7:30 a.m., 303.960.8129

  • Pikes Peak Ultra, 30k/50M, Bear Creek Regional Park, Colorado Springs, Colorado, 5:30 a.m., 719.429.9501
  • 28 Never Summer Trail Race, 100k, Gould Community Center, Walden, Colorado, 5:30 a.m., 970.404.2074
  • 28 Human Race, 5k/10k/Half, Museum of Discovery & Civic Center park, Fort Collins, Colorado, 6:30 a.m., 970.556.3279
  • 28 Grand Mesa Ultra Trail Runs, 30k/55k/50M/100M, Grand Mesa Lodge, Grand Junction, Colorado, 5:00 a.m., 970.856.3250

August 2018

  • 1 CMRA Fairmount Trail Run, 5k, Fairmount Park, Golden, Colorado, 6:30 p.m., 303.270.3509
  • 2 Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 3 RMRR DeKoevend Park Run, 5k, DeKoevend Park, Englewood, Colorado, 6:30 p.m., 303.871.8366
  • 4 Funnel Cake Run, 1M/5k, Adams County Fairground, Brighton, Colorado, 8:00 a.m., 303.637.5652

  • 4 Meyer Ranch Park Trail Race, 10M, Meyer Ranch Park, Evergreen, Colorado, 8:00 a.m., 720.880.1000
  • 4 Sheep Mountain Endurance Runs, 50k/51M, Town Beach, Fairplay, Colorado, 6:00 a.m., 720.624.9237
  • 4 Kennebec Challenge Mountain Run, 8.5M/15M, La Plata Canyon, La Plaza, Colorado, 8:00 a.m., 970.247.0312
  • 4 Winter Park Half Marathon, 5k/Half, Grand Park, Winter Park, Colorado, 8:00 a.m., 970.726.8009
  • 5 Evergreen Town Race, 5k/10k, Evergreen Lake, Evergreen, Colorado, 8:00 a.m., 303.643.1857

  • 5 XTERRA Castle Rock, 3k/5k/10k/20k, Philip S Miller Park, Castle Rock, Colorado, 7:00 a.m., 719.505.8717

  • 5 Beaver Creek Races, 10k/Half, Beaver Creek/Creekside Park, Avon, Colorado, 8:00 a.m., 858.775.7104
  • 7 Mountain Goats Kids Trail Running Series, 0.5M/1.5M/5k, Frisco Day Lodge, Frisco, Colorado, 5:45 p.m., 970.668.9133
  • 9 Summer 6Pack Series #5, 5k/5M, Westminster City Park, Westminster, Colorado, 6:30 p.m., 720.722.4226
  • 11 Silverton Ultra Marathon, 100k, Silverton, Colorado, 6:00 p.m., 303.990.9049
  • 11 Run the Rockies Races, 10k/Half, Frisco Adventure Park, Frisco, Colorado, 8:00 a.m., 970.668.9133
  • 11 So Long to Summer Runs, 5k/10k, Salisbury Park, Parker, Colorado, 8:00 a.m., 303.841.0353
  • 11 Holy Cow Trail Stampede, 5k/10k, Christopher Fields, Westminster, Colorado, 9:00 a.m., 720.722.4226
  • 11 Aspen Backcountry Marathon, Koch Park, Aspen, Colorado, 6:00 a.m., 970.429.2083
  • 12 Leadville 10k Run, 6th & Harrison, Leadville, Colorado, 12:00 p.m., 719.219.9351
  • 12 Steamboat Stinger Races, Half/Marathon, Howelson Base Area, Steamboat Springs, Colorado, 970.879.6141.301
  • 18 Pikes Peak Ascent, Half Marathon, Middle/High Schools, Manitou Springs, Colorado, 7:00 a.m., 719.473.2625
  • 18 Leadville Trail 100, 100M, 6th & Harrison, Leadville, Colorado, 3:00 a.m., 719.219.9351
  • 18 Peach Festival, 5k, CSU Hughes Stadium, Fort Collins, Colorado, 8:30 a.m., 970.460.6848
  • 19 Pikes Peak Marathon, Middle/High School, Manitou Springs, Colorado, 7:00 a.m., 718.473.2625
  • 19 Dog Days of Summer Runs, 5k/10k, Central Park, Denver, Colorado, 8:00 a.m., 720.365.2935
  • 23 Summer 6Pack Series #6, 5k/10k, Westminster City Park, Westminster, Colorado, 6:30 p.m., 720.722.4226
  • 25 Bergen Peak Half Marathon, Buchanan Park Recreational Center, Pioneer Trailhead, Evergreen, Colorado, 8:00 a.m., 720.880.1226
  • 25 Thirsty 13 Half Marathon, Ska Brewing, Durango, Colorado, 7:00 a.m., 970.903.6774
  • 25 Continental Divide Trail Run, 15.5M, Knoll Park Lot (Shuttles to Fish Creek start), Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 25 10k at 10000 Feet, 5k/10k, Eagle Bahn Gondola at Eagles Nest, Vail, Colorado, 9:00 a.m., 970.479.2280
  • 26 Rogers Grove Half Marathon, 10k/Half, Rogers Grove Park, Longmont, Colorado, 7:30 a.m., 858.775.7104
  • 26 Erie Half Marathon, 5k/Half, Reliance Park, Erie, Colorado, 8:30 a.m., 720.722.4226

September 2018

  • 1 Grand Traverse Mountain Run, 40M, Elk Avenue, Crested Butte, Colorado, 6:30 a.m., 970.497.9600
  • 1 Creede Mountain Run, 2M/12M/22M, Main Street, Creede, Colorado, 9:00 a.m., 719.850.8715
  • 2 10k Meters at 10000 Feet, 5k/10k, Old Rabbit Ears Pass Road, Steamboat Springs, Colorado, 10:00 a.m., 970.879.0880
  • 3 Labor Day Mini Marathon, 5k/10k/Half, Salisbury Park, Parker, Colorado, 7:00 a.m., 720.985.9047
  • 3 Highlands Ranch Half Marathon, Daniels Park to Town Center, Highlands Ranch, Colorado, 7:00 a.m., 888.668.1152
  • 3 Fortitude 10k, CSU, Fort Collins, Colorado, 8:00 a.m., 303.444.7223
  • 8 Shane Shatto WYO 8 Memorial Run, 5k, Recreation Center, Douglas, Wyoming, 8:00 a.m., 307.358.2122.2026

  • 8 Imogene Pass Run, 17.1M, Main Street, Ouray, Colorado, 970.728.0251
  • 8 Denver Trail Half Marathon, 10k/Half, Cherry Creek Reservoir, Denver, Colorado, 858.775.7104
  • 8 The Denver 5k, Sloans Lake, Denver, Colorado, 9:30 a.m., 888.803.4226
  • 8 Arvada Harvest Half Marathon, 5k/10k/Half, McIlvoy Park, Arvada, Colorado, 8:00 a.m., 720.365.2935
  • 9 RMRR Platte River Trailhead Park Run, 8M, Trailhead Park, Denver, Colorado, 8:00 a.m., 303.871.8366
  • 14 Run Rabbit Run, 50M/100M, Ski Area, Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 15 Dawn to Dusk 12hr Relay, 14M, Aldefer Three Sisters Park, Evergreen, Colorado, 7:00 a.m., 720.880.1226
  • 15 Prairie Dog Races, 5k/10k/Half, Westminster Promenade, Westminster, Colorado, 8:00 a.m., 720.722.4226
  • 15 CMRA South Seven Run, 5k, Bluffs Regional Park, Lone Tree, Colorado, 9:00 a.m., 303.912.6401
  • 16 Equinox Half Marathon & 5M, Poudre Canyon, Fort Collins, Colorado, 8:00 a.m., 970.556.3279
  • 16 US Marine Corps Memorial Runs, 5k/10k, Memorial Park, Arvada, Colorado, 9:00 a.m., 720.365.2935
  • 22 Snow Mountain Ranch Trail Races, 5k/10k/Half, YMCA of the Rockies Nordic Center, Granby, Colorado, 8:00 a.m., 858.775.7104
  • 22 Emerald Mountain Trail Run, 12k, Howelsen Hill, Steamboat Springs, Colorado, 9:00 a.m., 970.879.0880
  • 23 XTERRA Golden Gate, 7k/20k, Golden Gate State Park, Golden, Colorado, 9:00 a.m., 719.505.8717

  • 29 Monument Marathon, Half Marathon, and 5k, Five Rocks Amphitheatre, Gering, Nebraska, 8:00 a.m., 308.765.0524

  • 29 Haxtun Corn Festival 5k, Main Street, Haxtun, Colorado, 8:00 a.m., 970.774.6104

  • 29 Colorado Springs Marathon, 5k/Half, Acacia Park, Colorado Springs, Colorado, 7:00 a.m., 801.455.9623

    October 2018

    November 2018


    • 3 Moab Trail Marathon, Half Marathon, and Adventure 5k, Kane Creek Trailhead, Moab, Utah, 8:00 a.m., 970.389.4838

    • 4 Moab Trail Half Marathon, Kane Creek Trailhead, Moab, Utah, 8:00 a.m., 970.389.4838

    • 4 RMRR Prairie Gateway Races, 5k/9M, Prairie Gateway, Commerce City, Colorado, 9:00 a.m., 303.871.8366
    • 10 CMRA HR Veterans Run, 6.6M, Hildegrand Ranch Park, Littleton, Colorado, 10:00 a.m., 303.781.1738
    • 11 Silverton Ultra Marathon, 55k, Silverton, Colorado, 6:00 p.m., 303.990.9049
    • 17 Denver Pumpkin Pie Run, 5k/10k, City Park, Denver, Colorado, 9:00 a.m., 720.985.9047
    • 17 Arvada Turkey Trek, 2k/5k/10k, Long Lakes Sports Complex, Arvada, Colorado, 8:30 a.m., 970.449.2051
    • 17 CS Turkey Trot Predict, 5k, Memorial Park, Colorado Springs, Colorado, 10:00 a.m., 719.598.2953
    • 22 Broomfield Turkey Day Run, 5k/10k, Broomfield Commons Open Space, Broomfield, Colorado, 9:00 a.m., 720.722.4226
    • 22 Durango Turkey Trot, 1M/5M, Fort Lewis College, Durango, Colorado, 10:00 a.m., 970.903.6774
    • 22 Erie Pilgrimage Run, 2M/4M, Library, Erie, Colorado, 1.855.RECESS1
    • 22 Parker Turkey Day 5k, Cherry Creek Trail, Parker, Colorado, 8:00 a.m., 303.805.3278
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