Multisport
Calendar

Sign up for our Periodic email
Guide to Races in Colorado

Featured Events

Winter Running Series
Winter 2014-2015


Chilly Cheeks Winter Duathlon Series
Winter 2014-2015


Superior Stocking Run
Dec. 14, 2014


Yeti Chase 5K/10K
Jan. 25, 2015


Ralston Creek Half Marathon & 5K
Feb. 8, 2015


Three Creeks Half Marathon
April 4, 2015


Barkin' Dog Duathlon
May 9, 2015


Crescent Moon Triathlon
Sprint & Olympic
June 7, 2015


Mt. Evans Ascent
June 13, 2015


Front Range Triathlon Series
Summer 2015


Evergreen Sprint Triathlon
July 26, 2015


My Way or the Tri Way
August 30, 2015


Desert's Edge Tri Festival
Sept. 12-13, 2015


XTERRA Fruita
Sept. 12, 2015


Desert's Edge Sprint & Olympic Tri
Sept. 13, 2015


Littlefoot Triathlon
Sept. 20 2015


Winter Running Series
Winter 2014-2015


Chilly Cheeks Winter Duathlon Series
Winter 2014-2015


Superior Stocking Run
Dec. 14, 2014


Yeti Chase 5K/10K
Jan. 25, 2015


Ralston Creek Half Marathon & 5K
Feb. 8, 2015


January 2015

Racing Underground January Events

Date Event Location Website
17 Chilly Cheeks Winter Duathlon Series #2 Cherry Creek State Park - Aurora, CO Website

Details: A fun low-key, low-cost winter run & bike series. Each month features a different format, with a total run distance of 4 miles and bike of approximately 10 miles. Each race draws 200-400 participants!

Other area January Events

  • 17 - Chilly Cheeks Winter Duathlon #2 - (1.5M Run/3.6M Bike/2.5M Run/7.2M Bike) - Cherry Creek State Park - Denver, Colorado - 10:00 a.m. - 303.642.7917
  • 24 Aria Athletic Winter Triathlon, (5k Snowshoe, 10k Bike, 8K XC Ski), CMC Timberline Campus, Leadville, Colorado, 10:00 a.m., 970.845.0931

February 2015

Racing Underground February Events

Date Event Location Website
21 Chilly Cheeks Winter Duathlon Series #3 Cherry Creek State Park - Aurora, CO Website

Details: A fun low-key, low-cost winter run & bike series. Each month features a different format, with a total run distance of 4 miles and bike of approximately 10 miles. Each race draws 200-400 participants!

Other area February Events

  • 14 Mt. Taylor Winter Quadrathlon, (12M Bike/5M Run/2M Ski/2M Snowshoe/4M Ski/5M Run/13M Bike), Grants, New Mexico, 800.748.2142
  • 21 - Chilly Cheeks Winter Duathlon #3 - (10.8M Bike/4M Run) - Cherry Creek State Park - Denver, Colorado - 10:00 a.m. - 303.642.7917

March 2015


April 2014

  • 11 Imperial Challenge, (6.2M Bike/Ascent/Descent), Recreation Center, Breckenridge, Colorado, 10:00 a.m., 303.517.7046
  • 12 Tri the Rim, (pool Swim/Bike/Run), Lewis Pool, Durango, Colorado, 10:00 a.m., 970.247.7220
  • 19 Pole, Pedal, Paddle, (Back country Ski/Bike/Kayak), Monarch to Sailda, Colorado, 719.221.1710

May 2015

Racing Underground May Events

Date Event Location Website
9 17th Annual Barkin' Dog Duathlon Cherry Creek State Park - Aurora, CO Website

Details: For 17 years, the Barkin' Dog Duathlon has served as the unofficial opening race to Colorado's multisport season! Consistently one of the largest duathlons in the western US, the race sells out every year. The Barkin' Dog offers something for everyone, with a $1,000 prize purse for the elites, gender-specific tech shirts, a catered post-race meal, awesome sponsor drawing and more. Choose from the standard 5K run, 30K bike, 5k run or the shorter 2K run, 15K bike, 5K run. Beginners are always welcome, and more than 1,000 first timers have made their debut in the Barkin' Dog Duathlon!

Other area May Events

  • 9 - Barkin' Dog Duathlon - (5K Run/30K Bike/5k Run or 2K Run/15K Bike/5K Run) - Cherry Creek State Park - Aurora, Colorado - 7:00 a.m.- 303.642.7917
  • 10 - TRR Colorado Biathlon - (1M Kayak/5k Run) - Cherry Creek State Park - Aurora, Colorado - 9:00 a.m.- 703.532.6070
  • 16 - Summer Open Triathlon - (0.5M Swim/12.4M Bike/3.1M Bike) - Union Reservoir - Longmont, Colorado - 8:00 a.m.- 303.408.1195
  • 17 Tri the Rock Youth Triathlon (various distances, swim/bike/run), Butterfield Park, Castle Rock, Colorado, 8:00 a.m., 720.733.2284
  • 23 - Pelican Fest Triathlon - (800m Swim/10M Bike/5k Run) - Pelican Lake - Windsor, Colorado - 8:00 a.m.- 970.308.4499
  • 24 - MHM Open Water Swim - 0.5mi, 1mi, 1.5mi, 2mi, and 2.5mi options- Grant Ranch - Lakewood, Colorado - 7:30 a.m.
  • 30 - XTERRA Lory Triathlon - (0.5M Swim/12.2M Bike/4.8M Run) - Lory State Park - Fort Collins, Colorado - 7:50 a.m.- 303.408.1195
  • 30 - Longmont Kids Triathlon - (Various distances, Swim/Bike/Run) - Centennial Pool - Longmont, Colorado - 7:45 a.m.- 303.651.8406
  • 30 Center Beginner Triathlon, (0.25M Swim/10M Bike/5k Run), Sand Dunes Pool, Hooper, Colorado, 7:00 a.m., 719.850.3439
  • 30 Melon Man Triathlon (500m pool Swim/11.5M Bike/5k Run), Public Pool, Rocky Ford, Colorado, 719.254.3114
  • 31 - Longmont Triathlon - (525Y Swim/12M Bike/5k Run) - Centennial Pool - Longmont, Colorado - 7:00 a.m.- 303.651.8406
  • 31 - Colorado Sprint Triathlon - (0.5M Swim/17M Bike/5k Run) - Boulder, Colorado - 8:00 a.m.- 303.408.1195
  • 31 Give it a Tri Kids Tri & Mini Sprint, Old Town Hot Springs, Steamboat Springs, Colorado, 7:30 a.m., 941.961.7575

June 2015

Racing Underground June Events

Date Event Location Website
7 Crescent Moon Sprint Tri Aurora Reservoir - Aurora, CO Website

Details: There is no better way to start the Front Range triathlon season than the Crescent Moon! Enjoy a 750 meter swim in crystal clear water, a 20K closed bike course, and a scenic 5K run on a mix of bike path and well maintained dirt roadways. Celebrate with a catered meal, a fantastic sponsor expo, and an atmosphere you can only get at a Racing Underground event!


7 Crescent Moon Olympic Tri Aurora Reservoir - Aurora, CO Website

Details: The first Olympic tri of the year on the Front Range! Our early June date make this the perfect test of your winter training, and is the perfect tune-up race for the Boulder IM events. Great swag and post-race food await!!!


Other area June Events

  • 4 Boulder Stroke & Stride Series #1 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 6 HRCA Tune Up Triathlon (500Y pool Swim/12M Bike/5k Run), Recreation Center at Westridge, Highlands Ranch, Colorado, 6:00 a.m., 202.791.2500
  • 7 - Crescent Moon Sprint Triathlon - (750m Swim/20k Bike/5k Run) - Aurora Reservoir - Aurora, Colorado - 8:00 a.m. - 303.642.7917
  • 7 - Crescent Moon Olympic Triathlon - (1,500m Swim/40k Bike/10k Run) - Aurora Reservoir - Aurora, Colorado - 8:00 a.m. - 303.642.7917
  • 9 Aquaman Series #1 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195
  • 10 Boulder Stroke & Stride Series #2 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 10 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 13 Boulder Sprint Triathlon (0.5M Swim/17.2M Bike/3.1M Run), Boulder Reservoir, Boulder, Colorado, 813.868.5940
  • 13 Ironman 70.3 (1.2M Swim/56M Bike/13.1M Run), Boulder Reservoir, Boulder, Colorado, 813.868.5940
  • 13 Mini Ha Ha Triathlon (300Y pool Swim/11M bike/2M Run), Community Center Pool, Broomfield, Colorado, 7:30 a.m., 303.460.6918
  • 13 Highline Hustle Triathlon (500m Swim/16M Bike/5k Run), Highline Lake State Park, Fruita, Colorado, 7:30 a.m., 813.868.5940
  • 14 - Fort Collins Triathlon & Relay - (450y Swim/12M Bike/3 Mile Run) - EPIC - Fort Collins, Colorado - 7:00 a.m.- 970.310.3640
  • 14 XTERRA Pagosa Springs (1k Swim/18.5M Bike/6.9M Run), Lake Pagosa, Pagosa Springs, Colorado, 9:00 a.m., 970.398.0612
  • 16 Aquaman Series #2 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195
  • 17 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 18 Boulder Stroke & Stride Series #3 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 19 - Metro Brokers TriathlON Friday - (0.5M Swim/12M Bike/5k Run) - Cherry Creek State Park - Denver, Colorado - 6:00 p.m.- 303.843.0100
  • 20 XTERRA Curt Gowdy (1200m Swim/14.1M Bike/5.4M Run), Curt Gowdy Park, Cheyenne, Wyoming, 9:00 a.m., 303.408.1195
  • 20 - Lookout Mountain Triathlon - (500m pool Swim/10M Bike/5k Run) - Mt Vernon Country Club - Golden, Colorado - 6:30 a.m.- 303.960.8129
  • 21 USAT Splash & Dash, (various distances), Denver, Colorado, 719.597.9090
  • 23 Aquaman Series #3 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195
  • 24 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 25 Boulder Stroke & Stride Series #4 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 27 TriBella Triathlon (0.5M Swim/10M Bike/5k Run) (0.25M Swim/8M Bike/2M Run), Cherry Creek State Park, Denver, Colorado, 8:00 a.m., 303.408.1195
  • 27 Lake to Lake Triathlon (1.5k Swim/30M Bike/10k Run), High School, Loveland, Colorado, 6:30 a.m., 970.669.6372
  • 27 Tri the Boat Triathlon (sprint & Olympic), Stage Coach State Park, Steamboat Springs, Colorado, 8:00 a.m., 941.961.7575
  • 28 - Tri on the Plains - (750m Swim/14M Bike/5k Run) - North Sterling Reservoir - Sterling, Colorado - 7:30 a.m.- 970.580.1166
  • 28 Tri the Boat Triathlon (Half), Stage Coach State Park, Steamboat Springs, Colorado, 8:00 a.m., 941.961.7575
  • 28 South Suburban Youth Tryathlon (various distances), Goodwin Recreation Center, Centennial, Colorado, 6:30 a.m., 303.483.7029
  • 30 Aquaman Series #4 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195

July 2015

Racing Underground July Events

Date Event Location Website
26 Evergreen Sprint Triathlon Evergreen Lakehouse in Evergreen, CO Website

Details: Triathlon returned to Evergreen in 2012, to the rave reviews of participants! Evergreen Lake is a spectacular venue, and this 750 meer swim, 12 mile bike, 5K run course features world class scenery and a great foothills course just 25 minutes from Denver. Come see why this race has gotten bigger every year!!!

Other area July Events

  • 1 Boulder Stroke & Stride Series #5 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 2 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 5 - MHM Open Water Swim - 0.5mi, 1.2mi, 2.4mi, and 4.8mi options- Grant Ranch - Lakewood, Colorado - 7:30 a.m.
  • 7 Aquaman Series #5 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195
  • 9 Boulder Stroke & Stride Series #6 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 9 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 11 LG Triathlon (500m Swim/12M Bike/5k Run) (kids distances), Pool, Eagle, Colorado, 7:00 a.m., 970.328.9565
  • 11 Pagosa Duathlon (6M Run/12.5M Bike/5k Run) (3M Run/7M Bike), Monument Park Road, Pagosa Springs, Colorado, 8:00 a.m., 970.264.9075
  • 11-12 Leadville Silver King/Queen (50M Mtn Bike/50M Run), Leadville, Colorado, 719.219.9351
  • 12 Boulder Peak Triathlon (1.5k Swim/42k Bike/10k Run), Boulder Reservoir, Boulder, Colorado, 813.868.5940
  • 14 Aquaman Series #6 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195
  • 16 Boulder Stroke & Stride Series #7 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 16 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 18 - YOLO Triathlon - (sprint & olympic) - Aurora Reservoir - Aurora, Colorado - 6:15/7:15 a.m.- 303.888.3227
  • 18 Summit Games Triathlon (Paddle Board/Mtn Bike/Run), Bay Marina, Frisco, Colorado, 8:30 a.m., 800.424.1554
  • 18 XTERRA Beaver Creek Triathlon (1M Swim/15.5M Bike/5.75M Run) (0.5M Swim/9M Bike/5k Run) Nottingham Lake, Avon, Colorado, 9:00 a.m., 970.845.5293
  • 19 - Steamboat Lake Sprint Triathlon - (750m Swim/12.4M Bike/3.5M Run) - Steamboat Lake State Park - Steamboat, Colorado - 8:00 a.m.- 303.408.1195
  • 19 Tri it High Triathlon & Duathlon (500m pool Swim/20k Bike/5k Run) (5k Run/20k Bike/5k Run), Recreation Center, Leadville, Colorado, 719.486.7484
  • 21 Aquaman Series #7 (05M/1M/1.5M/2M Swim Only or Aquathlon 0.5M/1M/1.5M/2M Swim & 5k Run), Cherry Creek State Park, Denver, Colorado, 6:15 p.m., 303.408.1195
  • 23 Boulder Stroke & Stride Series #8 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 23 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 25 XTERRA Aspen Valley (1200m Swim/12M Bike/3M Run), Private Property, Carbondale, Colorado, 10:00 a.m., 303.408.1195
  • 26 - Evergreen Triathlon - (750m Swim/12M Bike/5k Run) - Evergreen Lake House - Evergreen, Colorado - 7:00 a.m.- 303.642.7917
  • 29 Boulder Stroke & Stride Series #9 (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 30 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279

August 2015

Racing Underground August Events

Date Event Location Website
30 My Way or the Tri Way Aurora Reservoir - Aurora, CO Website

Details: The Funnest Tri you will do this year! My Way or the Tri Way allows you to pick the order you swim, bike, and run. Don't like one of the three sports? Then choose a 2-event option like bike-run-bike or swim-run-swim. Enjoy a cold wet finisher towel and a catered post-race lunch once you are done. This is also a family-friendly event with a jumpy castle for the kids and sign making station for your spectators!

Other area August Events


  • 1 USAT Youth Splash & Dash (various distances), Steamboat Springs, Colorado, 179.597.9090
  • 1 South Suburban Youth Tryathlon (various distances), Cook Creek Pool, Lone Tree, Colorado, 6:30 a.m., 303.483.7029
  • 1 Aspen Triathlon (800Y pool Swim/17M Bike/4M Run), Recreation Center, Aspen, Colorado, 7:00 a.m., 970.544.4100
  • 1 BEC Triathlon (400m Swim/15k Bike/5k Run), Nottingham Lake, Avon, Colorado, 8:00 a.m., 888.325.5940
  • 2 Ironman Triathlon (2.6M Swim/112M Bike/26.2M Run), Boulder Reservoir, Boulder, Colorado, 813.868.5940
  • 2 Tri for the Cure (500m Swim/10M Bike/5k Run), Cherry Creek State Park, Denver, Colorado, 7:00 a.m., 303.430.2969
  • 6 Boulder Stroke & Stride Series Raindate (750m/1500m Swim & 5k Run), Boulder Reservoir, Boulder, Colorado, 6:00 p.m., 303.408.1195
  • 6 Tri Training Series (750m/1500m Swim/5k Run or 3000m Swim Only), Horsetooth Reservoir, Fort Collins, Colorado, 6:00 p.m., 970.556.3279
  • 8 XTERRA Snow Mountain Ranch (1000m Swim/14M Bike/4M Run), Gaylord Reservoir, Winter Park, Colorado, 10:00 a.m., 303.960.8129
  • 8 Splash Mash & Dash Triathlon (500Y pool Swim/10M Bike/3.5M Run), Center at Northridge, Highlands Ranch, Colorado, 6:00 a.m., 303.791.2500
  • 9 - Outdoor Divas Triathlon - (750m Swim/12.4M Bike/3.1M Run) - Union Reservoir - Longmont, Colorado - 8:00 a.m.- 303.408.1195
  • 15 Tinman Triathlon (pool swim), Lamar Swimming Pool, Lamar, Colorado, 7:00 a.m., 719.336.4376
  • 16 - Steamboat Triathlon - (1.5k Swim/24.8M Bike/10k Run) (1.5k Swim/40k Bike) (0.5M Swim/12.5M Bike/5k Run) - Lake Catamount - Steamboat Springs, Colorado - 8:00 a.m.- 303.408.1195
  • 22 - XTERRA Buffalo Creek Triathlon - (1500m Swim/22M Bike/5M Run) - Wellington Lake - Bailey, Colorado - 8:15 a.m.- 303.408.1195
  • 22 USAT Youth Splash & Dash (various distances), Colorado Springs, Colorado, 719.597.9090
  • 23 - Fort Collins Triathlon & Relay - (450y Swim/12M Bike/3 Mile Run) - EPIC - Fort Collins, Colorado - 7:00 a.m.- 970.310.3640
  • 23 Stapleton Kids Triathlon (various distances), Jet Stream Pool, Denver, Colorado, 8:00 a.m., 303.388.0724
  • 23 Evergreen Kids Triathlon (various distances), Buchanan Park Recreation Center, Evergreen, Colorado, 9:00 a.m., 720.880.1000
  • 29 Without Limits Open Water Swim (1.2M/2.4M Swim), Boulder Reservoir, Boulder, Colorado, 7:00 a.m., 303.408.1195
  • 30 - My Way or the Tri Way Where you pick the order! - Triathlon (swim, bike & run) - Duathlon (run & bike) - Aquathlon (swim & run) - Aquabike (swim & bike) - (750m Swim/20k Bike/3.5 mile Run) - Aurora Reservoir - Aurora, Colorado - 7:30 a.m. - 303.642.7917
  • 30 XTERRA All Womens Triathlon (sprint & Olympic), Bald Eagle Lake, Steamboat Springs, Colorado, 8:00 a.m., 941.961.7575

September 2015

Racing Underground September Events

Date Event Location Website
12 XTERRA Fruita Triathlon Highline Lake State Park - Fruita, CO Website

Details: The Desert's Edge Triathlon Festival has become THE fall road trip for triathletes from around the Rocky Mountain Region! And athletes RAVED about our new warmer mid-September date in 2014! We anticipate a sold-out event in 2015!!! Camp right at the race site, and race one of the best off-road courses of the year! A fun mix of single-track and double track, suitable for all ability levels.


13 Desert's Edge Sprint & Olympic Tri Highline Lake State Park - Fruita, CO Website

Details: The Desert's Edge Triathlon Festival has become THE fall road trip for triathletes from around the Rocky Mountain Region! And athletes RAVED about our new warmer mid-September date in 2014! Choose the sprint or Olympic distance on Sunday (or Saturday's Off-Road), camp just 100 yards from transition, and enjoy what many have described as the most scenic tri course in the state! Swim in a beautiful desert oasis, bike on smooth pavement, and run the trail loop around the lake. There is no better way to end the Colorado tri Season.

20 Littlefoot Triathlon Bear Creek Lake Park - Lakewood, CO Website

Details: The Littlefoot Triathlon features a 750 meter swim in Soda Lake, a 15K single loop bike ride through the scenic 2,500 acre park, and a beautiful 5K run course that finishes in the expo area at the Bear Creek Marina.


Other area September Events

  • 12-13 - Desert's Edge Triathlon Festival - Saturday: XTERRA Fruita; Sunday: Road Sprint/Olympic - Highline Lake State Park, Fruita, Colorado - 9:00 a.m.- 303.642.7917
  • 12 - XTERRA Fruita - 1,200m Swim, 12 Mile MTB, 4.5 Mile Run - Highline Lake State Park, Fruita, Colorado - 9:00 a.m.- 303.642.7917
  • 12 Harvest Moon Triathlon (1.2M Swim/56M Bike/13.1M Run), Aurora Reservoir, Aurora, Colorado, 7:30 a.m., 303.408.1195
  • 13 - Desert's Edge Sprint & Olympic Tri - Highline Lake State Park, Fruita, Colorado - 9:00 a.m.- 303.642.7917
  • 20 - Littlefoot Triathlon - (750m Swim 15k Bike/5k Run) - Bear Creek Lake Park - Lakewood, Colorado - 7:00 a.m.- 303.642.7917
  • 27 - Oktoberfest Triathlon - (750m Swim/12.4M Bike/5k Run), Union Reservoir, Longmont, Colorado, 8:00 a.m., 303.408.1195

October 2015

  • 3 Black Canyon Triathlon (500Y pool Swim/24k Bike/5k Run), Aquatic Center, Montrose, Colorado, 8:00 a.m., 970.596.4108
  • 31 - Dirty Duathlon - (5k Run/16k Bike/5k Run), Ute Valley Park, Colorado Springs, Colorado, 10:00 a.m., 719.231.2351

November 2015


December 2015

Racing Underground December Events

Date Event Location Website
TBD Chilly Cheeks Winter Duathlon Series #1 Cherry Creek State Park - Aurora, CO Website

Details: A fun low-key, low-cost winter run & bike series. Each month features a different format, with a total run distance of 4 miles and bike of approximately 10 miles. Each race draws 200-400 participants!

Other area December Events


This site created by Racing Underground
All Images and content copyright (c) 1995-2014