Race calendar · Updated nightly
Races in Colorado
287 upcoming races: 239 running, 19 cycling, 18 trail, 13 ultra, 12 triathlon, 2 duathlon. Open any race for its distances, typical race-day weather and past results, or add it to your season to see how it fits.
October 2026
- Sun, Oct 25The 14th Annual Odyssey Odyssey - 2026Denver — 1 mi · 5K
- Sun, Oct 25Ghosts and Goblins 5K/10KDenver — 5K · 10K
- Fri, Oct 30Fleet Feet Colorado Springs Halloween Fun RunColorado Springs — 5K
- Sat, Oct 31I Ain't Scared (of 5k)Thornton — 5K
- Sat, Oct 31PB&J Fuel Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · HalfRegistration closed
- Sat, Oct 31Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · HalfRegistration closed
- Sat, Oct 31Halloween 5K Fundraiser!Grand Junction — 5K
- Sat, Oct 31Zombie Fun Run 5k & 1mileIdaho Springs — 1 mi · 5K
- Sat, Oct 31Colleen De Reuck XC ClassicBoulder — 5K
- Sat, Oct 31Spooky Sprint - Colorado SpringsColorado Springs — 1 mi · 5K · 10K · Half
- Sat, Oct 31Halloween Fun 5kSteamboat Springs — 5K
- Sat, Oct 31HRCA Backcountry Wilderness Half MarathonLone Tree — Half
- Sat, Oct 31CYCLO-X BoulderBoulder
- Sat, Oct 31
- Sat, Oct 31
- Sat, Oct 312026 Eerie ErieErie — 5K · 10K
- Sat, Oct 31Panda Waddle 5k 15th annualGrand Junction — 5K
November 2026
- Sun, Nov 1RMRR November 5k/15kDenver — 5K · 15K
- Sun, Nov 1All-Out Kooky-SpookyGolden — 5K · 10K · Half
- Sun, Nov 1Girls on the Run Northern Colorado Fall 5KFort Collins — 5K
- Sun, Nov 1Fossil Creek Park T&H 5KFort Collins — 5K
- Sun, Nov 1Feet for Justice RunDenver — 5K · 10K
- Sun, Nov 1Rim Rock Marathon & Half MarathonFruita — Half · Marathon
- Sun, Nov 1Preview Run - Lone Tree ReckoningLoveland — 11 mi
- Sat, Nov 7
- Sat, Nov 7Bell Ringer 2 MilerLoveland — 2 mi
- Sat, Nov 7BSBF 2- Mile Fun Run - Bell RingerLoveland — 2 mi
- Sat, Nov 7Alamosa Veterans Memorial Park RaceAlamosa — 5K · 10K
- Sat, Nov 7Turkey Trails- DenverLittleton — 50 m · 1 mi · 5K · 10K · Half
- Sat, Nov 7Colorado 24 Hour RunFort Collins
- Sat, Nov 7Kessel Run UltraFruita — 10 mi · 20 mi · 50K · 40 mi · 50 miRegistration closed
- Sat, Nov 7
- Sat, Nov 7Nielson ChallengeColorado Springs — 2 mi
- Sat, Nov 7Break a Leg 5kGrand Junction — 5K
- Sat, Nov 7Excel Eagle Trot 5K/1K Family Fun RunArvada — 1K · 5K
- Sat, Nov 7The Unselfish UltraGolden — 48.7K
- Sat, Nov 7
- Sat, Nov 7
- Sat, Nov 7Run for RiversGrand Junction — 1K · 5K
- Sun, Nov 8Turkey Trails - Colorado SpringsColorado Springs — 1 mi · 5K · 10K · Half
- Sun, Nov 8Dragon Dash 5K Run/WalkDenver — 5K
- Sun, Nov 8Canya Cañon Trail Race & HikeColorado Springs — 4K · 4 mi
- Sat, Nov 14Denver Veterans Day RunDenver — 5K · 10K
- Sat, Nov 14Leyden Rock Turkey Trot 5KArvada — 5K
- Sat, Nov 14Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Nov 14Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Nov 14Salute to Veterans 5K/10K/Half Marathon - DenverAurora — 5K · 10K · Half
- Sat, Nov 14Lone Tree Reckoning Heavy 15K and 5KLoveland — 5K · 15K
- Sat, Nov 14Boulder CupBoulder
- Sun, Nov 15Salute to Veterans 5K/10K/Half Marathon - Colorado SpringsColorado Springs — 5K · 10K · Half
- Sun, Nov 15The Wash Park Circuit, Powered by New BalanceDenver — 3.6K
- Sun, Nov 15Girls on the Run Denver Metro 5KDenver — 5K
- Fri, Nov 20Volunteers Cross Of The North 2026Fort Collins
- Sat, Nov 21TURKEY TREK (13.1, 10k, 5k & 2k)Arvada — 2K · 5K · 10K · Half
- Sat, Nov 21Pumpkin Pie 5K/10KDenver — 5K · 10K
- Sat, Nov 21Turkey Trot PredictColorado Springs — 5K
- Sat, Nov 21285 Turkey Trot - 2026Bailey — 5K · 10K
- Sat, Nov 21Chase the GlowEstes Park — 1 mi · 4 mi
- Sat, Nov 21
- Sat, Nov 212026 Cross of the NorthFort Collins
- Sat, Nov 21Turkey-Donut Predict RunFort Collins — 5K
- Thu, Nov 262026 Loveland Turkey TrotLoveland — 5K
- Thu, Nov 26Pelican Lakes Turkey TrotWindsor — 5K
- Thu, Nov 26Alpine Bank Boulder Thanksgiving Day 5KBoulder — 800 m · 5K
- Thu, Nov 26TurCreek Trot 5KGreenwood Village — 5K
- Thu, Nov 26Harvesting Hope 5kDenver — 5K
- Thu, Nov 26Grand Junction Fire Fighters Foundation GJ Turkey TrotGrand Junction — 5K
- Thu, Nov 26
- Thu, Nov 26Gobble Wobble Run 2026Littleton — 5K
- Thu, Nov 26Huffin' for Stuffin' 2-Mile Fun RunLoveland — 2 mi
- Thu, Nov 26The Pilgrimage Run 2026Erie — 366 m · 2 mi · 4 mi
- Thu, Nov 26
- Thu, Nov 26Fitness Avenue Turkey Trot 5KJohnstown — 1K · 5K
- Thu, Nov 26Pagosa Turkey Trot 5k Fun Run/WalkPagosa Springs — 5K
- Thu, Nov 26Buena Vista Turkey Trot 5K & Family Fun RunBuena Vista — 1 mi · 5K
- Thu, Nov 26NCMC Turkey TrotGreeley — 2K · 5K
- Thu, Nov 26Fort Collins Thanksgiving Day RunFort Collins — 4 mi
- Thu, Nov 26Winter Park Turkey Trot 5KWinter Park — 5K
- Thu, Nov 26The Great Turkey ChaseGolden — 3 mi
- Thu, Nov 26Montrose Turkey TrotMontrose — 2 mi · 10 mi
- Thu, Nov 26Broomfield Turkey Day 5K/10KBroomfield — 5K · 10K
- Thu, Nov 26
- Thu, Nov 26YMCA Turkey Trot 5K presented by Corwin HondaColorado Springs — 998 m · 5K
- Thu, Nov 26AdventHealth Avista Louisville Turkey TrotLouisville — 5K
- Thu, Nov 26YMCA of Pueblo Turkey TrotPueblo — 5K
- Thu, Nov 26Steamboat Springs Turkey TrotSteamboat Springs — 5K
- Thu, Nov 26Westcliffe Turkey TrotWestcliffe — 5K
- Thu, Nov 26Glenwood Springs Turkey Day 5K & Fun RunGlenwood Springs — 2K · 5K
- Thu, Nov 26Thanksgiving Day Southmoor Park Fun RunDenver — 1.9K
- Fri, Nov 27Christmas Mountain 5 Mile RunSalida — 1 mi · 5 mi
- Fri, Nov 27Tardy Turkey TrotEstes Park — 6.8K
- Sat, Nov 28Coffee Lovers Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Nov 28Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sun, Nov 29Tiger Trail 5K Run/WalkColorado Springs — 5K
December 2026
- Sat, Dec 5Toy DropLoveland — 5K · 10K · 15K
- Sat, Dec 5All-Out Fa La LaWestminster — 5K · 10K · Half
- Sat, Dec 5Candy Cane Course - Colorado SpringsColorado Springs — 1 mi · 5K · 10K · 15K
- Sat, Dec 5Onesie Dash AND Mini DashRed Feather Lakes — 1 mi
- Sat, Dec 5Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law GroupColorado Springs — 5K
- Sat, Dec 5Sawmill Trail RunsPine — 13K · 26K · 51K
- Sat, Dec 5CYCLO-X LongmontLongmont
- Sat, Dec 5
- Sat, Dec 5
- Sun, Dec 6RMRR December 4.5miDenver — 7.2K
- Sun, Dec 6Rock Canyon Half Marathon- 40th Anniversary Run!Pueblo — 5K · Half
- Sun, Dec 6Candy Cane Course - DenverWestminster — 1 mi · 5K · 10K · 15K
- Sat, Dec 12Superior Stocking RunSuperior — 5K
- Sat, Dec 12WinterFest 5k & Fun RunThornton — 5K
- Sat, Dec 12Santa Shuffle 5KLittleton — 5K
- Sat, Dec 12Santa Catch 5k & 10kWindsor — 5K · 10K
- Sat, Dec 12Run for Breast Cancer 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Dec 12Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Dec 12Sleigh Bell ShuffleLoveland — 1 mi
- Sat, Dec 12YMCA Jingle Jog 5K presented by Corwin HondaFountain — 1.3K · 5K
- Sun, Dec 132026 Jingle Bell Run - ColoradoDenver — 1 mi · 5K
- Sat, Dec 19Santa's Dash for Ca$hDenver — 5K
- Sat, Dec 19Sweaty Sweater 5kFort Collins — 1 mi · 5K
- Sat, Dec 19Colorado Tap House Jingle Bell RunArvada — 1 mi
- Sun, Dec 20Ugly Sweater 5KDenver — 5K
- Sat, Dec 26A Merry Christmas Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Dec 26New Year's Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Thu, Dec 31Resolution Run - Fort CollinsFort Collins — 5K
- Thu, Dec 31James Pre-Paid Teams TestLyons — 12K
January 2027
- Fri, Jan 1Resolute Runner 5kArvada — 5K
- Fri, Jan 1Salida New Year's Day 5KSalida — 5K
- Fri, Jan 1New Year's Day 5K/10KGrand Junction — 5K · 10K
- Fri, Jan 1Rescue RunColorado Springs — 5K · 10K
- Sat, Jan 2YMCA of Pueblo Hot Chocolate 5KPueblo — 5K
- Sat, Jan 9All-Out Polar ProwlArvada — 5K · 10K · Half
- Sat, Jan 9Sentinel FlurryGolden — 1 mi · 5K
- Sat, Jan 16
- Sat, Jan 16MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Jan 16Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sun, Jan 17Colorado Cold SnapLouisville — 5K · 10K
- Sat, Jan 23Chilly Willy 5K/10K/Half Marathon - Colorado SpringsColorado Springs — 5K · 10K · 13.1K · Half
- Sun, Jan 24Freakin Freezin 5K - DenverDenver — 5K
- Sun, Jan 24Redrum RunEstes Park — 7 mi
- Sun, Jan 24Yeti Chase 5k/10kMorrison — 5K · 10K
- Sat, Jan 30Rio Frio 5kAlamosa — 5K
- Sat, Jan 30Coffee Lovers Run DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Jan 30Run for Donut DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
February 2027
- Sat, Feb 6All-Out Mardi CrawlArvada — 5K · 10K · Half
- Sat, Feb 6Westy Winter Waggle 5&10kWestminster — 5K · 10K
- Sat, Feb 6Stories Trail RunsColorado Springs — 10.8K · Half · 31.5K
- Sun, Feb 7Old Man Winter Bike Rally & RunLyons — 5K · 10K · Half
- Sat, Feb 13Valentine's Day Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Feb 13Run for Chocolate 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Feb 13Heart Throb 5kArvada — 5K
- Sun, Feb 14The Toyota Super Half Marathon™& Game Day 5K™Colorado Springs — 5K · Half
- Sun, Feb 14Ralston Creek Half Marathon & 5kArvada — 5K · Half
- Sat, Feb 20Chilly Cheeks DuathlonEnglewood
- Sat, Feb 27Run Together Against Breast Cancer DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Feb 27Run For Mental Health DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sun, Feb 28Highlands Ranch 5kHighlands Ranch — 5K
March 2027
- Sat, Mar 6Sharin' O' The Green 5kFort Collins — 5K
- Sat, Mar 6Time to Paddy 5K/10K & Lucky 13.1 13.1 - DenverDenver — 1 mi · 5K · 10K · Half
- Sun, Mar 7Time to Paddy 5K/10K & Lucky 13.1 - Colorado SpringsColorado Springs — 1 mi · 5K · 10K · Half
- Sat, Mar 1322nd Annual Run Through Time Trail Marathon and Half MarathonSalida — 2 mi · Half · Marathon
- Sat, Mar 13Erin Go Bragh 7.77kWestminster — 7.8K
- Sun, Mar 14Lucky Brew Race 5K, 10K, 15k & Half MarathonSeverance — 5K · 10K · 15K · Half
- Sat, Mar 20Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Mar 20St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sun, Mar 21All-Out Spring FeverGolden — 5K · 10K · Half
- Sun, Mar 21Spring EquinoxWellington — 5K · Half
- Sun, Mar 21Central Park 5kDenver — 5K
- Sat, Mar 27Always Hope Easter Run DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Mar 27SuperHeroes Run DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
April 2027
- Sat, Apr 3Grand Valley Oncology - Life In Color 5KGrand Junction — 5K
- Sun, Apr 4Three Creeks Half MarathonEnglewood — Half
- Sun, Apr 4Donut DashDenver — 5K
- Sat, Apr 10Sloth Run 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Apr 10Run for PB&J 5k/10k/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Apr 10Run Through The Decades 6K/7K/8K/Half - Colorado SpringsColorado Springs — 6K · 7K · 5 mi · Half
- Sun, Apr 11Platte River Half-Marathon, Relay & 5kLittleton — 5K · Half
- Sun, Apr 11NoCo Urban Ultra & RelayBellvue — 50 mi · 100 mi
- Sun, Apr 11Spring Fling Prairie Dog Half, 10k, & 5kArvada — 5K · 10K · Half
- Sun, Apr 18Horsetooth Half Marathon - Presented by Fort Collins ConnexionFort Collins — Half
- Sat, Apr 24All-Out Beat the HeatWestminster — 5K · 10K · Half
- Sat, Apr 24DoNot Stop Half Marathon/5K/10K - Colorado SpringsColorado Springs — 50 m · 1 mi · 5K · 10K · Half
- Sat, Apr 24Bigfoot Half MarathonEstes Park — 5K · Half
- Sat, Apr 24Coffee Lovers Run DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Apr 24Run for Donut DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Apr 24SOAR 5KGolden — 5K
- Sun, Apr 25Unicorn 5k (Denver-East)Denver — 5K
- Sun, Apr 25DoNot Stop Half Marathon/5K/10K - DenverDenver — 50 m · 1 mi · 5K · 10K · Half
May 2027
- Sat, May 1Greenland Trail RacesLarkspur — 4 mi · 8 mi · 25K · 50K
- Sun, May 2The Colorado MarathonFort Collins — 5K · 10K · Half · Marathon
- Sun, May 2Emerge 5KBoulder — 5K
- Sun, May 2Longmont Half & 5k (LM Half)Longmont — 5K · Half
- Sun, May 2Koppenberg Road RaceSuperior
- Sat, May 8Hometown Half Marathon/5K/10K - Colorado SpringsColorado Springs — 50 m · 1 mi · 5K · 10K · Half
- Sat, May 8Colterris Wine Run 5kPalisade — 5K
- Sat, May 8Run for Chocolate 5k/10k/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sun, May 9Colorado Women's Classic - WestminsterWestminster — 5K · 10K · 10 mi
- Sun, May 9Denver Mother's Day 5KDenver — 5K
- Sun, May 9Hometown Half Marathon/5K/10K - DenverDenver — 50 m · 1 mi · 5K · 10K · Half
- Sat, May 15Endure Trail RunsDivide — 11K · 22.7K · Marathon
- Sat, May 15Vallecito Lake Heavy HalfBayfield — 14 mi
- Sat, May 15Royal Gorge Six & TwelveCañon City
- Sat, May 15Wild Horse GravelDe Beque — Half · 20 mi · 43 mi · 59 mi · 77 mi · 95 mi
- Sat, May 22Farish Trail RaceWoodland Park — 5K · 10K · Half
- Sat, May 22Samson's RevengeEstes Park — 10.4K · 25K · 50K
- Sat, May 22Run the Spruce 5K and 1K Fun RunPalmer Lake — 1K · 5K
- Sat, May 22Superville Time TrialSuperior
- Sat, May 29SuperHeroes Run DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Mon, May 31BOLDERBoulder 10KBoulder — 10K
June 2027
- Sat, Jun 5Weld Your Mettle Running FestivalEaton — 6.9K · 14 mi · Marathon · 50K · 50 mi · 100K · 200 mi
- Sat, Jun 5Colorado TriathlonBoulder
- Sat, Jun 5Boulder Bundle (Colorado Tri Sprint + Boulder Peak)Boulder — Sprint
- Sun, Jun 6Flamingo Day 5KDenver — 5K
- Sun, Jun 6The Steamboat MarathonSteamboat Springs — 10K · Half · Marathon
- Sun, Jun 6Summer Vibes Bike Rally & Run FestivalLyons — 5 mi
- Sun, Jun 6Colorado 13er (Half Marathon/10k/5k)Louisville — 5K · 10K · Half
- Fri, Jun 11M1LE Nation ChallengeFort Collins — 800 m · 1 mi
- Sat, Jun 12All-Out Summer BreezeArvada — 5K · 10K · Half
- Sat, Jun 12Summits Trail RunsGranby — 10K · 22.4K · 44.7K · 54.6K
- Sat, Jun 12Alpha 5K ChallengeBoulder — 5KRegistration closed
- Sat, Jun 12Lory Off-Road TriathlonBellvue
- Sat, Jun 12IRONMAN 70.3 BoulderBoulder — Half (70.3)
- Sat, Jun 19Treat Trot - DenverDenver — 1 mi · 5K · 10K · 15K
- Sat, Jun 19Run Juneteenth Day 5K/10K/13.1 DENVER/AURORACentennial — 1 mi · 5K · 10K · Half
- Sat, Jun 19Red, White and Brew 5k, 10k & Half MarathonWindsor — 1 mi · 5K · 10K · Half
- Sat, Jun 19Unicorn 5k (North)Thornton — 1K · 5K
- Sun, Jun 20Treat Trot Colorado SpringsColorado Springs — 1 mi · 5K · 10K · 15K
- Sun, Jun 20Father's Day Classic 10k, 5k, & 1 MileArvada — 1 mi · 5K · 10K
- Fri, Jun 25Race in the Clouds - Alma Dirt Festival 2027Alma — 10K · Half · Standard
- Sat, Jun 26Slacker Half Marathon-Relay-4-Mile RacesGeorgetown — 4 mi · Half
July 2027
- Sat, Jul 3Red, White, and WARRIOR 5KGrand Junction — 400 m · 5K
- Sun, Jul 4Let Freedom Run 5k/10k - LouisvilleLouisville — 5K · 10K
- Sun, Jul 4Greeley Freedom 5k Walk & RunGreeley — 5K
- Sun, Jul 4Independence Day Freedom 5KBuena Vista — 3K · 5K
- Fri, Jul 9Silverheels Trail RunsComo — 17.4K · 30.7K · 61.6K · 86.6K · 101.5K · 170.9K
- Sat, Jul 10All-Out Dog DaysWestminster — 5K · 10K · Half
- Sat, Jul 10Grin & Bear ItCrested Butte — 15K · 25K
- Sat, Jul 10Cookie ChaseDenver — 5K
- Sun, Jul 11Boulder Peak TriathlonBoulder
- Sat, Jul 17Summer Splash Prairie Dog Half, 10k, & 5kCastle Rock — 5K · 10K · Half
- Sat, Jul 17Heatwave Half Marathon/5K/10K - DenverDenver — 50 m · 1 mi · 5K · 10K · Half
- Sun, Jul 18Heatwave Half Marathon/5K/10K - Colorado SpringsColorado Springs — 1 mi · 5K · 10K · Half
- Sun, Jul 25Spirit of the West 5K Run/WalkGolden — 5K
- Sun, Jul 25Steamboat Lake Sprint TriathlonClark — Sprint
- Sat, Jul 31Eat. Run. Adopt. 10KBerthoud — 10K
- Sat, Jul 31Popsicle 5K/10K/Half - Colorado SpringsColorado Springs — 5K · 10K · Half
August 2027
- Sun, Aug 1Bound for Boston Marathon & Half Marathon - DenverDenver — Half · Marathon
- Sun, Aug 1Stagecoach Gravel TriathlonOak Creek
- Thu, Aug 5Eldorado Run for the CureEldorado Springs — 4 mi
- Sat, Aug 7All-Out RunapaloozaArvada — 5K · 10K · Half
- Sat, Aug 7Dog Days of SummerLongmont — 1K · 5.6K
- Sat, Aug 7Sheep Mountain Trail RunsFairplay — 22.9K · 33 mi · 85.5K
- Sat, Aug 7Unicorn 5k (South)Highlands Ranch — 1 mi · 5K
- Sat, Aug 7Summer Sizzler- DenverDenver — 1 mi · 5K · 10K · 15K
- Sat, Aug 7Kennebec Mountain RunHesperus — 15 mi
- Sat, Aug 7RoC & Roll 5K: Run, Walk, or WheelFountain — 5K
- Sat, Aug 7Crooked GravelWinter Park — 25 mi · 67 mi · 93 mi
- Sun, Aug 8Summer Sizzler- Colorado SpringsColorado Springs — 1 mi · 5K · 10K · 15K
- Sat, Aug 14Pat's Pony ExpressWoodland Park — 8 mi · 16 mi
- Sat, Aug 14Outdoor Divas TriathlonLongmont
- Sun, Aug 15Erie Half & 5kErie — 5K · Half
- Sun, Aug 15THE BRECK EPIC MTB STAGE RACEBreckenridge — 230 mi
- Mon, Aug 16James Test SiteLyons — 5K
- Sat, Aug 21Ram Run 5KDenver — 5K
- Sat, Aug 21Byers Peak Stampede Half Marathon & 5K RunFraser — 3 mi · Half
- Sun, Aug 22Pioneer Prairie Dog Half, 10k & 5kWestminster — 5K · 10K · Half
- Sat, Aug 28TBK Bank Thirsty 13 Half MarathonDurango — Half
September 2027
- Mon, Sep 6Labor Day Half MarathonParker — 5K · 10K · Half
- Tue, Sep 7Spirit of the Valley 5kGrand Junction — 1K · 5K
- Sat, Sep 11The Denver 5kDenver — 5K
- Sat, Sep 11Break Your Neck: Walk, Run, or RollPueblo — 5K · 10K
- Sat, Sep 112027 Lake Nighthorse Triathlon - Sprint and OlympicDurango — Sprint · Olympic
- Sat, Sep 11Golden Harvest Half Marathon & 5K/10K - DenverDenver — 50 m · 1 mi · 5K · 10K · Half
- Sat, Sep 11Vapor Trail 125Salida
- Sat, Sep 11The Littlefoot Sprint TriathlonLakewood — Sprint
- Sun, Sep 12Golden Harvest Half Marathon & 5K/10K - Colorado SpringsColorado Springs — 50 m · 1 mi · 5K · 10K · Half
- Sat, Sep 18All-Out Fall FestWestminster — 5K · 10K · Half
- Sat, Sep 18Autumn RunBuena Vista — 100 m · 5K · 10K · Half
- Sat, Sep 18Oktoberfest Sprint TriathlonLongmont — Sprint
- Sat, Sep 25Sangre de Cristo Trail FestivalWestcliffe — 8 mi · 27K · 50K · 50 mi · 100K · 104 mi
October 2027
- Sat, Oct 2Spooky Sprint - DenverDenver — 1 mi · 5K · 10K · Half
- Sat, Oct 2The Extra Mile 5KEnglewood — 5K
- Sat, Oct 9Manitou 5KManitou Springs — 5K
- Sun, Oct 10Westy Half & 5kWestminster — 5K · Half
- Sat, Oct 16Indian Creek Trail RunsSedalia — 8.9K · 15 mi · 35 mi · 54 mi
- Sat, Oct 16The Great Trailhead Foot Race 5 & 10 MilerLakewood — 5 mi · 10 mi
- Sat, Oct 16Chili ChaseDurango — 10.9K
- Sat, Oct 16Running Scared 5K/13K - DenverLittleton — 5K · 13K
- Sun, Oct 17Running Scared 5K/13K - Colorado SpringsColorado Springs — 5K · 13K
November 2027
- Sun, Nov 7Colorado Springs Veterans Day 5kColorado Springs — 5K