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Guide to Races in Colorado

Featured Events

Winter Running Series
Winter 2021-2022


Chilly Cheeks Winter Duathlon Series
Winter 2021-2022


Superior Stocking Run
Dec. 2021


Yeti Chase 5K/10K
Jan. 2022


Ralston Creek Half Marathon & 5K
Feb. 2022


Three Creeks Half Marathon
April 2022

Barkin' Dog Duathlon
April 2022


Mt. Evans Ascent
June 27, 2021


Evergreen Sprint Triathlon
July 17, 2022


Littlefoot Triathlon
Sept. 11, 2021


Winter Running Series
Winter 2021-2022


Chilly Cheeks Winter Duathlon Series
Winter 2021-2022


Superior Stocking Run
Dec. 2021


Yeti Chase 5K/10K
Jan. 2022


Ralston Creek Half Marathon & 5K
Feb. 2022


June 2021

  • 1 HRCA Happy Hour Half K, Shea Stadium, Highlands Ranch, Colorado, 6:00 p.m., 303.471.7048
  • 3 Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 5 Big Dog Brag, 3k/5k, RAM OffRoad Park, Colorado Springs, Colorado, 8:30 a.m., 719.210.6820
  • 5 High Drive Challenge, 4M/10M, Bear Creek Regional Park, Colorado Springs, Colorado, 7:00 a.m., 719.429.9501
  • 5 Turquoise Lake Half Marathon, Matchless Boat Ramp, Leadville, Colorado, 9:00 a.m., 605.641.7580
  • 5 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 5 North Fork Runs, 50k/50M, Community Hall, Buffalo Creek, Colorado, 7:00 a.m., 303.320.3343
  • 5 Run for Life, 5k, Memorial Park, Colorado Springs, Colorado, 8:00 a.m., 719.355.1183
  • 5 Fire Hydrant 5k, Edora Park, Fort Collins, Colorado, 8:30 a.m., 970.226.3647
  • 5 Habitat for Humanity run, 5k, Fickel Park, Berthoud, Colorado, 7:30 a.m., 970.532.2870
  • 5 Bergen Peak Half Marathon, Buchanan Park Recreation Center, Pioneer Trailhead, Evergreen, Colorado, 8:00 a.m., 720.880.1226
  • 5 Into the Wild Running Festival, 5k/10k, Wild Animal Sanctuary, Keenesburg, Colorado, 7:00 a.m., 303.536.0118
  • 5 Runoff Runoff, 6k/Half Marathon/Marathon, Ball Park, Creede, Colorado, 8:00 a.m., 719.589.2330
  • 5 Revel Races, Half Marathon/Marathon, Bandimere Speedway, Morrison, Colorado, 6:00 a.m. CANCELLED
  • 5 Colorado Brewery Running Series, 5k, Bruz Beers, Denver, Colorado, 11:00 a.m., 303.955.7410
  • 6 Flamingo Day 5k, Sloans Lake, Denver, Colorado, 9:00 a.m., 720.985.9047
  • 6 Fish Hatchery 5k, Cross Country Trail Run/National Fish Hatchery, Leadville, Colorado, 8:30 a.m., 605.641.7580
  • 6 RMRR Bible Park 4k, Bible Park, Denver, Colorado, 8:00 a.m., 303.871.8366
  • 6 Steamboat Races, 10k/Half/Marathon, 8th & Oak, Steamboat Springs, Colorado, 7:30 a.m., 970.285.3550
  • 6 Vitality Run, 5k, Washington Park, Denver, Colorado, 9:00 a.m., 303.830.1839
  • 6 Crazy Legs 10k, Devils Backbone Open Space, Loveland, Colorado, 7:00 a.m., 219/873.6296
  • 6 Basalt Half Marathon & Relay, Base of Dam/Frying Pan Road, Basalt, Colorado, 7:45 a.m., 970.618.2063
  • 10 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 11 Ragnar Relay, 120M, Copper Mountain, 801.499.5024
  • 12 Golden Gate Dirty 30, 12M/50k, Golden Gate Park, Black Hawk, Colorado, 6:00 a.m., 303.990.9049
  • 12 South Park Trail Races, Half/Marathon, South Park City, Fairplay, Colorado, 8:00 a.m., 720.624.9237
  • 12 Steamworks Half Marathon, Sports Club, Durango, Colorado, 8:00 a.m., 970.903.6774
  • 12 CMRA Elk Meadow Trail Run, 5.1M, Elk Meadow, Evergreen, Colorado, 8:00 a.m., 303.550.8014
  • 12 Front Range Freedom Run, 5k/10k, USAFA, Colorado Springs, Colorado, 7:00 a.m., 660.624.0172
  • 12 Jodies Race for Awareness, 5k, City Park, Denver, Colorado, 8:00 a.m., 303.694.2202
  • 12 Colorado Brewery Running Series, 5k, 14er Brewing, Denver, Colorado, 11:00 a.m., 303.955.7410
  • 13 Garden of the Gods Run, 10k/10M, Garden of the Gods, Manitou Springs, Colorado, 7:00 a.m., 719.963.1747
  • 16 Happy Camper Runs, 50M/100k/150M/200M, Stanley Lake Regional Park, Westminster, Colorado, 8:00 a.m., 719.400.5122
  • 17 FiBark Tenderfoot Mountain Run, 2M, Tenderfoot Mountain, Salida, Colorado, 6:00 p.m., 719.539.6738
  • 17 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 19 Leadville Trail Marathon & Heavy Half Marathon, 6th Street Gym, Leadville, Colorado, 8:00 a.m., 719.219.9351
  • 19 FiBark Road Races, 5k/10k, Thonhoff Park, Salida, Colorado, 8:00 a.m., 719.539.6738
  • 19 Mueller Marathon, 25k/Marathon, Mueller State Park, Divide, Colorado, 7:00 a.m., 719.429.9501
  • 19 Howelsen Races, 4M/8M, Olympian Hall, Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 19 Summer Solstice Run, 5k/10k/Kids, Creekside Park, Beaver Creek, Colorado, 9:30 a.m., 970.479.2280
  • 19 Mountain Ridge Races, 10k/Half Marathon, Mountain Ridge Middle School, Highlands Ranch, Colorado, 7:30 a.m., 720.835.9141
  • 19 Stepping Stone 5k, Clement Park, Littleton, Colorado, 9:00 a.m., 720.839.4626
  • 19 Bacon Burner 6k, Marina, Frisco, Colorado, 9:30 a.m., 970.668.9133
  • 19 Jeremy Bitner Fallen Officer Run, 5k/10k, Cornerstone Park, Englewood, Colorado, 8:00 a.m., 720.281.5938
  • 19 Rockin for Recovery, 5k, Boarwalk Park, Windsor, Colorado, 8:30 a.m., 970.658.7369
  • 20 FiBark Trail Race, 10k, Arkansas Hills Trail System, Salida, Colorado, 8:00 a.m., 719.539.6738
  • 20 Ft Collins Fathers Day Run, 5k, Mountain Avenue, Fort Collins, Colorado, 8:00 a.m., 970.221.6655
  • 20 Estes Parks Races, 5k/10k/Half/Marathon, Middle & High Schools, Estes Park, Colorado, 6:00 a.m., 970.214.4128
  • 24 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 25 Blue Moon Trail Run, 5k/8k, Pinon Valley Park, Colorado Springs, Colorado, 6:00 p.m., 719.385.7942
  • 26 Slacker Races, 4M/Half Marathon, Loveland Ski Area, Georgetown, Colorado, 8:00 a.m., 303.679.2312

  • 26 Running Wild, 1M/5k, Regis University, Denver, Colorado, 8:00 a.m., 303.877.0223
  • 26 Run 4 Hope, 5k/10k, Broncos Parkway Trailhead, Centennial, Colorado, 7:00 a.m., 303.261.6886
  • 26 Erie Firecracker Run, 4k/4M, Community Center, Erie, Colorado, 8:00 a.m., 814.454.7191
  • 26 San Juan Solstice 50 Mile Run, Town Armory, Lake City, Colorado, 5:00 a.m., 970.944.2269
  • 27 Mt Evans Ascent, 14.5M Ascwent and 29M Round-Trip, Mt Evans, Idaho Springs, Colorado, 5:30 a.m., 303.642.7917

  • 27 Turkey Flats Trail Run, 9.6M, Glade Park, Grand Junction, Colorado, 9:00 a.m., 970.434.9753
  • 27 Purple Stride 5k, Washington Park, Denver, Colorado, 7:00 a.m., 310.725.0251
  • 27 Colorado Brewery Running Series, 5k, Breckenridge Brewery, Littleton, Colorado, 11:00 a.m., 303.955.7410

July 2021

  • 3 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 3 Vail HillClimb, 7.5M, Mountain Haus, Vail, Colorado, 8:00 a.m., 970.479.2280
  • 4 Aspen Buddy Race, 5M, Rio Grande Park, Aspen, Colorado, 8:00 a.m., 970.925.3414
  • 4 Fort Collins Firekracker 5k, City Park, Fort Collins, Colorado, 7:30 a.m., 970.556.3279
  • 4 Highlands Ranch HRCA Independence Day 5k, Dorchester Street/Town Center South, Highlands Ranch, Colorado, 8:00 a.m., 303.471.7048
  • 4 Palmer Lake 4th of July Fun run, 4M, Santa Fe Trail, Palmer Lake, Colorado, 7:00 a.m., 303.919.7269
  • 4 Denver Liberty Run, 4M, Washington Park, Denver, Colorado, 8:30 a.m., 303.522.4387
  • 4 Evergreen Freedom Run, 5k, Evergreen Middle School, Evergreen, Colorado, 8:00 a.m., 303.674.6400
  • 4 Loveland Liberty 5k, Fairgrounds, Loveland, Colorado, 8:00 a.m., 970.215.9642
  • 4 Leadville Firecracker 5k, Downtown, Leadville, Colorado, 8:30 a.m., 605.641.7580
  • 8 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 10 Silverheels Endurance Run, 100M, High School Track, Fairplay, Colorado, 4:00 a.m., 720.624.9237
  • 10 Silver Rush Run, 50M, Dutch Henry Hill, Leadville, Colorado, 9:00 a.m., 719.219.9351
  • 10 Elk Meadow Trail Race, 5k/10k, Buchanan Park Recreation Center, Evergreen, Colorado, 8:00 a.m., 720.880.1226
  • 10 Silverton Alpine Races, 8M/Marathon/50k, Memorial Park, Silverton, Colorado, 7:00 a.m., 602.346.0554
  • 11 Crag Crest Trail Run, 10.5M, Island Lake Trailhead, Grand Mesa, Colorado, 9:00 a.m., 970.241.6478
  • 11 Silverheels last Call 50 Miler, Cohen Park, Fairplay, Colorado, 12:00 a.m., 720.624.9237
  • 11 RMRR Stone House Run, 2M, Stone House, Lakewood, Colorado, 8:00 a.m., 303.871.8366
  • 11 Kendall Mountain Sky Race, 12M, 12th & Greene to Memorial Park, Silverton, Colorado, 9:00 a.m., 602.828.6629
  • 15 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 16 Hardrock Hundred Mile Endurance Run, Silverton, Colorado, 970.259.3693
  • 17 Colorado Springs Classic, 10k, North Monument Valley Park, Colorado Springs, Colorado, 7:00 a.m., 719.429.9501
  • 17 10k at 10000 Feet, 5k/10k, Eagle Bahn Gondola @ Eagles Nest, Vail, Colorado, 9:00 a.m., 970.479.2280
  • 17 Kickers Endurance Run, 50k/50M/100M, Palmer Lake Regional Recreation Area, Palmer Lake, Colorado, 7:30 a.m., 719.400.5122
  • 17 Sunlight Showdown, Half Marathon, Sunlight Mountain Resort, Glenwood Springs, Colorado, 7:30 a.m., 970.945.7491
  • 18Black Hawk Trail Races, 10k/Half Marathon, Golden Gate State Park, Golden, Colorado, 858.259.1501
  • 18 Barr Trail Mountain Race, 12M, Cog Railway Station, Manitou Springs, Colorado, 7:00 a.m., 719.258.0360
  • 18 Donor Dash, 5k, Washington Park, Denver, Colorado, 8:00 a.m., 303.329.4747
  • 18 Colorado Brewery Running Series, 5k, Upslope Brewing, Boulder, Colorado, 11:00 a.m., 303.955.7410
  • 18 XTERRA Beaver Creek Trail Runs, 5k/10k/19k, Beaver Creek Resort, Avon, Colorado, 8:30 a.m., 877.XTERRA.1
  • 22 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 24 RiNo 5k, Coors Field North Parking Lot, Denver, Colorado, 7:30 p.m., 303.982.5255

  • 23 Blue Moon Trail Run, 5k/10k, Pinon Valley Park, Colorado Springs, Colorado, 6:00 p.m., 719.385.7942
  • 23 Chase the Moon 12Hr Endurance Race, Mountain Vista High School, Highlands Ranch, Colorado, 7:00 p.m., 303.320.3343
  • 24 Elevation 5k, West Jeff Elementary School, Conifer, Colorado, 8:00 a.m., 303.982.5255

  • 24 Spring Creek Memorial, 5k/9M, Spring Creek Trail, Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 24 Heritage Eagles Run, 5k, Heritage High School, Littleton, Colorado, 8:00 a.m., 303.347.7600
  • 29 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 30 Rocky Mountain Centennial 5k, Wild Basin Lodge, Estes Park, Colorado, 8:30 a.m., 719.214.4128
  • 30 Never Summer Trail Race, 100k, Gould Community Center, Walden, Colorado, 5:30 a.m., 303.946.9320
  • 30 High Lonesome 100 Miler, Colorado Road 321, Salida, Colorado, 6:00 a.m., 720.591.6634
  • 31 Rocky Mountain Half Marathon, Stanley Hotel, Estes Park, Colorado, 6:00 a.m., 949.295.3302
  • 31 Kennebec Challenge, Mountain Runs, 8.5M/15M, La Plata Canyon/La Plata City Campground, La Plata, Colorado, 8:00 a.m., 970.247.0312
  • 31 Pikes Peak Ultra, 30k/50k/50M, Bear Creek Regional Park, Colorado Springs, Colorado, 5:30 a.m., 719.429.9501
  • 31 Berry Picker Trail Run, 5k, Lionshead Village, Vail, Colorado, 8:00 a.m., 970.479.2289

August 2021


  • 1 Evergreen Town Race, 5k/10k, Evergreen Lake, Evergreen, Colorado, 8:00 a.m., 303.653.1857
    CANCELLED Check back in 2022!
  • 5 Boulder Stroke & Stride 5k Run, Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 6 Silverton Double Dirty 30, 100k, School Gym, Silverton, Colorado, 6:00 a.m., 303.990.9049
  • 6 RMRR DeKoevend Park Run, 5k, DeKoevend Park, Englewood, Colorado, 6:30 p.m., 303.871.8366
  • 6 Colorado Brewery Running Series, 5k, New Belgium Ranger Station, Snowmass, Colorado, 11:00 a.m., 303.955.7410
  • 7 Human Race, 5k/10k/Half Marathon, Museum of Discovery & Civic Center Park, Fort Collins, Colorado, 6:30 a.m., 970.556.3279
  • 7 Sheep Mountain Endurance Run, 50k/51M, Town Beach, Fairplay, Colorado, 6:00 a.m., 720.624.9237
  • 7 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 7 Foster Care 1M/5k, Riverdale Regional Park, Brighton, Colorado, 8:00 a.m., 303.637.8027
  • 7 Timberview Trail Run, 2.5M/5M, Lory State Park, Bellvue, Colorado, 7:30 a.m., 970.363.6499
  • 7 Step Up for Literacy Run, 1k/5k, Weidner Field, Colorado Springs, Colorado, 9:00 a.m., 719.306.2330
  • 7 HEARS 5k Experience, Bear Creek Park East, Colorado Springs, Colorado, 8:30 a.m., 719.649.9220
  • 7 Staunton State Park Run, 20k, Staunton State Park, Evergreen, Colorado, 8:00 a.m., 720.880.1000
  • 7 Aspen Backcountry Marathon, Koch Park, Aspen, Colorado, 6:00 a.m., 970.429.2083
  • 8 Honey Stinger Emerald Mountain Epic, Half Marathon/Marathon, Howelson Base Area, Steamboat Springs, Colorado

  • 10 Lory Summer Trail Series, Valley 5k, Lory State Park, Bellevue, Colorado, 6:00 p.m., 303.946.9320
  • 14 Sunrise Stampede, 2M/10k, 11th Avenue, Longmont, Colorado, 8:30 a.m., 303.772.9451

  • 14 XTERRA Indian Peaks, 5k/10k, Eldora Nordic Center, Nederland, Colorado, 8:00 a.m., 303.960.8129

  • 14 Mayors Cup, 5k/10k, Ute Pass Cultural Center, Woodland Park, Colorado, 8:30 a.m., 719.687.5225
  • 14 Georgetown to Idaho Springs Half Marathon, Georgetown Lake, Georgetown, Colorado, 8:00 a.m., 303.378.2404
  • 14 Run the Rockies Trail Races, 10k/Half Marathon, Adventure Park, Frisco, Colorado, 8:00 a.m., 970.668.9133
  • 14 Warrior Run, 5k, Arapahoe High School, Centennial, Colorado, 8:00 a.m., 303.347.6000
  • 15 Pancake Stampede, 5k, Hudson Gardens, Littleton, Colorado, 8:00 a.m., 303.709.7515
  • 15 Leadville 10k Run, 6th & Harrison, Leadville, Colorado, 12:00 p.m., 719.219.9351
  • 15 Resolution Brew Run, 5k, Waldschanke Ciders, Denver, Colorado, 10:30 a.m., 303.776.1914
  • 15 Race for Research, 5k, Washington Park, Denver, Colorado, 8:00 a.m., 303.694.2202
  • 17 Lory Summer Trail Series, Hilly 10k, Lory State Park, Bellevue, Colorado, 6:00 p.m., 303.946.9320
  • 20 Valley 5000 Run, 5k, Mehaffey Park, Loveland, Colorado, 7:00 p.m., 970.215.9642
  • 21 Leadville Trail 100, 6th & Harrison, Leadville, Colorado, 3:00 a.m., 719.219.9351
  • 21 Pikes Peak Ascent, Half Marathon, Middle/High Schools, Manitou Springs, Colorado, 7:00 a.m., 719.473.2625
  • 21 Continental Divide Trail Run, 5M/16M/50k, Knoll Park Lot (shuttle to Fish Creek start), Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 21 Colorado Brewery Running Series, 5k, Call to Arms Brewing, Denver, Colorado, 11:00 a.m., 303.955.7410
  • 21 Dynafit Half Marathon, Venue TBD, Red Cliff, Colorado, 8:00 a.m., 970.479.2280
  • 21 Pajama Jog, 5k, City Park Pavilion, Denver, Colorado, 8:30 a.m., 720.295.9276
  • 21 Mt Sneffels Races, Half Marathon/Marathon, Ouray Hot Springs Park, Ouray, 6:30 a.m., 970.325.0228
  • 22 Pikes Peak Marathon, Middle/High School, Manitou Springs, Colorado, 7:00 a.m., 718.473.2625
  • 23 Louisville Trail Races, 5k/10k/Half Marathon, Community Park, Louisville, Colorado, 8:00 a.m., 858.775.7104
  • 24 Lory Summer Trail Series, Hilly 5k, Lory State Park, Bellevue, Colorado, 6:00 p.m., 303.946.9320
  • 28 Protect the Children, 5k, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.660.5312
  • 28 HRCA Wildcat Mountain Trail Run, 10k/10M, Rocky Heights Middle School, Highlands Ranch, Colorado, 7:00 a.m., 303.471.7048
  • 28 Thirsty 13 Half Marathon, Ska Brewing, Durango, Colorado, 7:00 a.m., 970.903.6774
  • 28 Lincoln Mountain Fun Run, 12Hrs, Lincoln Mountain Open Space, Larkspur, Colorado, 7:00 a.m., 719.400.5122
  • 28 Race to Cure Sarcoma, 5k, Great Lawn Park, Denver, Colorado, 9:00 a.m., 301.253.8687
  • 28Run Like the Wind, 2k/5k/10k, The Old Gallery, Allenspark, Colorado, 9:00 a.m., 303.747.2906
  • 29 Calarat Challenge Trail Run, 5k/10k/Kids, CalWood Education Center, Ward, Colorado, 8:00 a.m., 720.532.5549
  • 29 RMRR Fall Training Series, 10M/20M, Platte Trailhead Park, Thornton, Colorado, 7:00 a.m., 303.871.8366
  • 29 Bluffs Run, 5k, Recreation Center, Lone Tree, Colorado, 8:00 a.m., 303.483.7034
  • 29 Be A Hero 5k, Rolland Moore Park, Fort Collins, Colorado, 970.472.4133
  • 29 Log Hill Hustle, 5k/10k, Log Hill Village Mailbox Kiosks, Ridgway, Colorado, 8:00 a.m., 970.626.5111
  • 31 Lory Summer Trail Series, Valley 12K, Lory State Park, Bellevue, Colorado, 6:00 p.m., 303.946.9320

September 2021

  • 4 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 4 Cirque Trail Series, 6.8M/2340 vertical feet, Arapahoe Basin Mountain, Keystone, Colorado, 10:00 a.m., 800.516.0041
  • 4 Grand Traverse Mountain Run, 40M, Elk Avenue, Crested Butte, Colorado, 6:30 a.m., 970.497.9600
  • 4 Das Bier Burner 5k, River Run Village to Keystone Resort, Keystone, Colorado, 12:00 p.m., 877.250.7750
  • 5 Cheap 5k, Flea Market, Colorado Springs, Colorado, 8:30 a.m., 719.362.3306
  • 5 10k at 10000, 5k/10k, Summit of Old Rabbit Ears Pass, Steamboat Springs, Colorado, 10:00 a.m., 303.915.0396
  • 7 Labor Day Races, 5k/10k/Half Marathon, Parker, Colorado, 720.985.9047
  • 7 Lakewood Trail Series, 4M, Bear Creek Lake Park, Lakewood, Colorado, 6:00 p.m., 303.987.4800
  • 11 CMRA South Seven Run, 5k, Bluffs Regional Park, Lone Tree, Colorado, 9:00 a.m., 303.912.6401
  • 11 Black Squirrel Half Marathon, Lory State Park, Bellevue, Colorado, 7:00 a.m., 303.946.9320
  • 11 NED*NED Race, 5k/Half Marathon, Teens Inc, Nederland, Colorado, 8:00 a.m., 303.258.3821
  • 11 EverGold Run, 5k/11k, Golf Club, Vail, Colorado, 10:00 a.m., 970.479.2280
  • 11 Beulah Challenge, 5k/10k/Half Marathon, School of Natural Sciences, Beulah, Colorado, 8:00 a.m., 719.432.6579
  • 11 Fountain Creek Endurance Races, 4M/6M/Ultra 12Hr, Fountain Creek Regional Park, Fountain, Colorado, 8:00 a.m., 719.400.5122
  • 11 Evergreen Mountain Trail Run, 15k, Alderfer Three Sisters Park, Evergreen, Colorado, 8:00 a.m., 720.880.1226
  • 11 Devil on the Divide, 22k/50k, Henderson Mine, Empire, Colorado, 303.567.4822
  • 11 Wild n Wooly Trail Runs, 5k/10k/25k, Recreation Center, Meeker, Colorado, 7:00 a.m., 970.878.3403
  • 12 RMRR Platte River Run, 5k/10k, Platte River Trailhead, Thornton, Colorado, 9:00 a.m., 303.871.8366
  • 12 El Grito 5k, Buckhorn Exchange Restaurant, Denver, Colorado, 9:00 a.m., 303.912.6401
  • 12 Colorado Brewery Running Series, 5k, Two 22 Brew, Aurora, Colorado, 11:00 a.m., 303.955.7410
  • 14 Lakewood Trail Series, 5M, Bear Creek Lake Park, Lakewood, Colorado, 6:00 p.m., 303.987.4800
  • 17 Run Rabbit Run, 100M, Ski Area, Steamboat Springs, Colorado, 8:00 a.m., 970.879.0880
  • 18 Mountain RATS Trail Races, Half Marathon/Marathon/50k, Color Coffee Roasters, Eagle, Colorado, 7:30 a.m., 303.249.1112

  • 18 Run 4 Hope, 5k, The Ascent Church, Monument, Colorado, 8:05 a.m., 719.930.6140

  • 18 Snow Mountain Ranch Race, 5k/10k/Half Marathon, YMCA of the Rockies, Granby, Colorado, 8:00 a.m., 858.775.7104
  • 18 HRCA Oktoberfest 5k/100Y Dash, Town Center, Highlands Ranch, Colorado, 8:30 a.m., 303.471.7048
  • 18 Run the Rockies, 10k/Half Marathon, Adventure Park, Frisco, Colorado, 8:00 a.m., 970.668.9133
  • 18 Golden Leaf Half Marathon, Fanny Hill/Snowmass Village, Aspen, Colorado, 8:30 a.m., 970.925.2849
  • 18 Autumn Color Run, 1M/5k/10k/Half Marathon, McPhelemy Park, Buena Vista, Colorado, 9:00 a.m., 719.221.2867
  • 19 Mountain RATS 5k, Color Coffee Roasters, Eagle, Colorado, 7:30 a.m., 303.249.1112

  • 19 Farmers 5000, 5k, High School, Wheat Ridge, Colorado, 9:00 a.m., 303.880.1732

  • 19 Sunset Trail Running Festival, 5k/10k/Half Marathon, 50k, Main Street, Gold Hill, Colorado, 9:00 a.m., 720.532.5549
  • 19 Equinox Races, 5M/Half Marathon, Poudre Canyon, Fort Collins, Colorado, 8:00 a.m., 970.556.3279
  • 19 PPRR Pony Express Run, 15M, Rampart Range Road & Rainbow Gulch Trail, Woodland Park, Colorado, 8:00 a.m., 719.598.2953
  • 19 Race Against Suicide, 5k, El Pomar Youth Sports Pavilion, Colorado Springs, Colorado, 10:30 a.m., 719.573.7447
  • 19 Sangre de Cristo Ultra, 27k/50k/50M/100k/100M, 200M, County Road 119, Westcliffe, Colorado, 4:00 a.m., 720.624.9237
  • 19 Lead King Loop & Quarry Climb, 25k/12.5k, Beaver Lake Lodge, Marble, Colorado, 8:30 a.m., 970.704.1275
  • 21 Lakewood Trail Series, 7M, Bear Creek Lake Park, Lakewood, Colorado, 6:00 p.m., 303.987.4800
  • 25 Monument Marathon, 5k/Half Marathon/Marathon, Five Rocks Amphitheatre, Gering, Nebraska, 8:00 a.m., 308.765.0524

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

  • 25 Bear Chase Races, 10k/50k/50M/100k, Bear Creek Lake Park, Lakewood, Colorado, 6:30 a.m., 303.320.3343
  • 25 Emerald Mountain Trail Run, 12k, Howelson Hill, Steamboat Springs, Colorado, 9:00 a.m., 970.879.0880
  • 25 Wet Line Winder Trail Run, 50k, East Main & North Court Streets, Buena Vista, Colorado, 8:00 a.m., 720.591.6634
  • 25 Rogers Fun Run, 1M, Joyride Brewing, Edgewater, Colorado, 720.319.7368
  • 25 Dayspring Dash, 5k, Dayspring Christian Church, Windsor, Colorado, 9:00 a.m., 970.225.0401
  • 26 RMRR Fall Training Series, 10M/20M, Platte Trailhead Park, Thornton, Colorado, 7:00 a.m., 303.871.8366
  • 26 Be Ovary Aware 5k, Memorial Park, Colorado Springs, Colorado, 7:00 a.m., 719.233.4114
  • 26 Colorado Brewery Running Series, 5k, Frolic Brewing, Westminster, Colorado, 11:00 a.m., 303.955.7410
  • 28 Lakewood Trail Series, 4M, Bear Creek Lake Park, Lakewood, Colorado, 6:00 p.m., 303.987.4800

October 2021


  • 2 Rim to Rim Royal Gorge Races, 5k/10k, Royal Gorge, Canon City, Colorado, 8:30 a.m., 719.661.7600

  • 2 Wiggins High School Cross Country Invitation & 5k Citizens Race, High School, Wiggins, Colorado, 8:30 a.m., 970.596.2607

  • 2 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 2 Crested Butte Ultra, 55k/105k, Crested Butte Mountain Resort, Crested, Butte, Colorado, 4:00 a.m., 719.429.9501
  • 2 Bear Creek Fun Run, 2.5M/5k/Ultra 12Hrs, Bear Creek Regional Park, Colorado Springs, Colorado, 8:00 a.m., 719.400.5122
  • 2 Applefest 5k, Town Park, Cedaredge, Colorado, 7:30 a.m., 970.856.6961
  • 3 Rim to Rim Royal Gorge Races, Half Marathon, Royal Gorge, Canon City, Colorado, 8:30 a.m., 719.661.7600

  • 3 Autumn River Run, 5k/Half Marathon/Marathon, La Quinta Inn & Suites, North Platte, Nebraska, 7:30 a.m.

  • 3 CMRA Stone House Triple Cross, 8.4M, Stone House Park, Lakewood, Colorado, 9:00 a.m., 303.765.5512
  • 3 Long View Races, Half Marathon/Marathon, City Park & Fossil Creek Park, Fort Collins, Colorado, 8:00 a.m., 970.215.9642
  • 3 PPRR Fall Series, 3.1M, Norris Penrose Event Center, Colorado Springs, Colorado, 10:30 a.m., 719.598.2953
  • 9 Cheyenne Mountain Run, 5k/10k/25k, Cheyenne Mountain State Park, Colorado Springs, Colorado, 9:00 a.m., 719.322.0574
  • 9 Colorado Brewery Running Series, 5k, New Belgium Brewing, Fort Collins, Colorado, 11:00 a.m., 303.955.7410
  • 16 Blue Sky Trail Marathon, Blue Sky Trailhead/Horsetooth Mountain Park, Fort Collins, Colorado, 7:00 a.m., 303.946.9320
  • 16 Bellco Colfax 5k, City Park, Denver, Colorado, 9:00 a.m., 303.694.2202
  • 16 Aspen Valley Races, 5k/Marathon, Wagner Park, Aspen, Colorado, 7:00 a.m., 970.309.7214
  • 16 Harvest Night Run, 2M, North Lake Park, Loveland, Colorado, 4:00 p.m., 970.215.9642
  • 16 Indian Creek Fifties, 15M/55k/50M, Indian Creek Trailhead, Sedalia, Colorado, 6:00 a.m., 720.624.9237
  • 16 Sage Burner Races, 5k/13k, 28k/50k, Hartman Rocks, Gunnison, Colorado, 7:00 a.m., 719.429.9501
  • 17 Run to Whitewater, 18M, Tabequache Trail, Grand Junction, Colorado, 8:30 a.m., 970.245.4243
  • 17 Colfax Marathon Races, 10M/Half Marathon/Marathon, City Park, Denver, Colorado, 6:00 a.m., 303.694.2202
  • 17 PPRR Fall Series, 4M, North Monument Valley Park, Colorado Springs, Colorado, 10:30 a.m., 719.598.2953
  • 17 Beware of the Bear Trail Run, 5k/15k, Bear Creek Lake Park, Morrison, Colorado, 10:00 a.m., 303.870.0487
  • 23 Bobcat Trail Races, 10k/25k/50k, Palmer Park, Colorado Springs, Colorado, 7:00 a.m., 719.429.9501
  • 23 Fox Run, 5k/10k/Half Marathon/Marathon, Fox Run Regional Park, Colorado Springs, Colorado, 8:00 a.m., 719.400.5122
  • 24 Narrowleaf Lake Run, 4M/7M/10M, Boyd Lake State Park, Loveland, Colorado, 9:00 a.m., 970.363.6499

  • 24 Day of the Dead 5k, Washington Park, Denver, Colorado, 9:00 a.m., 720.985.9047
  • 24 Colorado Marathon Races, 5k/10k/Half Marathon/Marathon, Transportation Center, Fort Collins, Colorado, 6:00 a.m., 970.227.7384
  • 30 Eerie Erie, 5k/10k, Middle School, Erie, Colorado, 9:30 a.m., 303.926.7293

  • 30 YMCA Creepy Crawl, 5k, Santa Fe Trail & Palmer Lake, Palmer Lake, Colorado, 9:30 a.m., 303.919.7269
  • 31 PPRR Fall Series, 5.5M, Pinon Valley Park, Colorado Springs, Colorado, 10:30 a.m., 719.598.2953

November 2021


  • 6 Moab Trail Marathon, Adventure 5k/Half Marathon/Marathon, Kane Creek Trailhead, Moab, Utah, 9:00 a.m., 970.389.4838

  • 6 Nielson Challenge, 2M, North Monument Valley Park, Colorado Springs, Colorado, 8:00 a.m., 719.534.0534
  • 6 Bell Ringer Run, 4M, North Lake Park, Loveland, Colorado, 2:30 p.m., 970.215.9642
  • 6 HRCA Backcountry Wilderness Half Marathon, Paint Brush Park, Highlands Ranch, Colorado, 8:30 a.m., 303.471.7048
  • 6 Colorado Brewery Running Series: Five Alarm 5k Chili Cookoff, Resolute Tap Cellar, Arvada, Colorado, 11:00 a.m., 303.955.7410
  • 6 Rim Rock Races, 12k/Half Marathon/Marathon, Colorado Nation Monument, Fruita, Colorado, 8:00 a.m., 970.248.1469
  • 7 Moab Trail Sunday Half Marathon, Kane Creek Trailhead, Moab, Utah, 9:00 a.m., 970.389.4838

  • 13 Longmont Turkey Trot, 2M/10k, Altona Middle School, Longmont, Colorado, 9:00 a.m., 303.651.8406

  • 13 Colorado Springs Girls on the Run, 5k, America the Beautiful Park, Colorado Springs, Colorado, 10:00 a.m., 720.879.2354
  • 13 CMRA Veterans Run, 6.6M, Hildebrand Ranch Park, Littleton, Colorado, 10:00 a.m., 303.781.1738
  • 13 Colorado Brewery Running Series: Veterans Day 5k, Goat Patch Brewing, Colorado Springs, Colorado, 11:00 a.m., 303.955.7410
  • 14 Horsetooth Half Marathon, Hughes Stadium, Fort Collins, Colorado, 8:30 a.m., 303.946.9320
  • 14 PPRR Fall Series, 7.4M, Palmer Park Maizeland Entrance, Colorado Springs, Colorado, 9:30 a.m., 719.598.2953
  • 20 Brighton Turkey Trot, 5k, Recreation Center, Brighton, Colorado, 8:30 a.m., 303.655.2000

  • 20 Denver Pumpkin Pie Run, 5k/10k, City Park, Denver, Colorado, 9:00 a.m., 720.985.9047
  • 25 Durango Turkey Trot, 1M/5M, Fort Lewis College, Durango, Colorado, 10:00 a.m., 970.903.6774
  • 25 Frisco Turkey Day 5k, Old Community Center, Frisco, Colorado, 9:30 a.m., 970.668.9133
  • 25 Denver Gravy Boat Run, 5k, Sloans Lake, Denver, Colorado, 9:00 a.m., 303.981.4616
  • 26 Boulder Thanksgiving Day Run, 5k, Boulder Reservoir, Boulder, Colorado, 9:00 a.m., 720.532.5549

December 2021

  • 4 Colorado Brewing Running Series: On Your Left Ugly Sweater 5k, Left Hand Brewing, Longmont, Colorado, 11:00 a.m., 303.955.7410
  • 5 RMRR Wash Park 4.5Miler, Washington Park, Denver, Colorado, 9:00 a.m., 303.871.8366
  • 11 Sweaty Sweater Run, 5k, Horsetooth Reservoir, Fort Collins, Colorado, 10:00 a.m., 970.556.3279
  • 11 Toy Drop Race, 5k/10k, Berthoud Brewing Company, Loveland, Colorado, 8:45 a.m., 970.215.9642
  • 11 CMRA Sand Creek Run, 5M, Bluff Nature Center, Denver, Colorado, 10:00 a.m., 720.480.2370
  • 11 Sawmill Trail Runs, 27k/55k, White Ranch Open Space, Golden, Colorado, 7:00 a.m., 720.624.9237
  • 19 Christmas Sweater 5k, Washington Park, Denver, Colorado, 9:00 a.m., 720.985.9047
  • 31 Fort Collins Resolution Run, 5k, Edora Pool, Fort Collins, Colorado, 6:00 p.m., 303.946.9320
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