Curated races, clubs, and training

MarathonThe full 26.2 Half Marathon13.1 miles of fun 5KShort and fast 10KThe classic distance TrailGet off the pavement RoadPavement classics Ultra50K, 100K, and beyond FlatFast, PR-friendly courses DownhillNet elevation drop RelayRun as a team VirtualRun anywhere, anytime CoastalRun along the shoreline MountainHigh-altitude challenges

5KShort and fast 10KThe classic distance Half Marathon13.1 miles of fun MarathonThe full 26.2 50KYour first ultra 50 MileThe long haul 100KUltimate endurance 100 MileThe ultimate challenge

All trail racesGet off the pavement Mountain TrailsAlpine singletrack Coastal TrailsOcean views on foot Hilly TrailsRolling terrain off-road Flat TrailsSmooth and fast off-road Trail Ultras50K+ off-road Trail 50KFirst ultra on dirt Trail Marathon26.2 off-road Trail Half13.1 off-road

All road racesPavement classics Road MarathonClassic 26.2 on pavement Road Half13.1 on the roads Road 10K6.2 miles on pavement Road 5KFast 3.1 on the roads Flat RoadPR-friendly road courses Downhill RoadNet downhill road courses City RoadUrban road events

United StatesRaces across America Boston, MAHistoric running city New York, NYThe five boroughs Chicago, ILFlat and fast Los Angeles, CAWest coast running San Francisco, CAHills and views Denver, COMile high racing Portland, ORPacific Northwest Seattle, WAEmerald city runs Austin, TXTexas running scene Nashville, TNMusic city miles San Diego, CAYear-round sunshine Miami, FLTropical running Honolulu, HIIsland paradise runs Washington, DCMonument runs Salt Lake City, UTMountain valley racing Boulder, CORunner's paradise Bend, ORTrail town USA Asheville, NCBlue Ridge running Duluth, MNNorth Shore trails Charleston, SCSouthern charm runs Savannah, GALive oak lined routes Santa Fe, NMHigh desert art town Key West, FLSouthernmost runs Maui, HIVolcanic island trails Napa Valley, CAWine country running

FlatFast, PR-friendly courses RollingGentle hills throughout HillySignificant climbs MountainousMajor elevation challenges DownhillNet elevation drop CoastalRun along the shoreline MountainHigh-altitude challenges ValleyBetween the peaks IslandSurrounded by water CanyonDeep and dramatic DesertArid and exposed

OceanRun along the ocean LakePeaceful lake views RiverFollow the water BayHarbor and bay views WildernessDeep backcountry RuralQuiet country roads CityUrban energy LoopStart and finish together Point to PointA to B adventures Out & BackThere and back again

Turkey TrotThanksgiving weekend runs New Year'sStart the year running July 4thIndependence Day runs Valentine'sRun with your sweetheart St. Patrick'sLucky runs in green HalloweenSpooky season runs Memorial DayHonor and run ChristmasHoliday season runs Labor DayEnd-of-summer runs Mother's DayRun for mom Father's DayRun for dad Cinco de MayoFiesta runs MLK DayDream runs

YosemiteSierra Nevada running Grand CanyonRim-to-rim adventures ZionRed canyon trails YellowstoneGeothermal wilderness Big SurCoastal California SedonaRed rock running MoabDesert ultra country Lake TahoeAlpine lake running AcadiaNortheast coastal trails GlacierCrown of the continent Death ValleyExtreme desert running Joshua TreeHigh desert trails Rocky MountainAlpine trail running OlympicRainforest to coast Bryce CanyonHoodoo trails Great Smoky MountainsAppalachian running LeadvilleRace across the sky Mount RainierVolcanic peak trails Pictured RocksGreat Lakes shoreline

RelayRun as a team VirtualRun anywhere, anytime WalkingWalk-friendly events TrackOn the oval GrassSoft underfoot SandBeach running MixedVariety of terrain LapsMultiple loops

Boston, MAHistoric running city New York, NYThe five boroughs Chicago, ILFlat and fast Los Angeles, CAWest coast running San Francisco, CAHills and views Denver, COMile high racing Portland, ORPacific Northwest Seattle, WAEmerald city runs Austin, TXTexas running scene Nashville, TNMusic city miles San Diego, CAYear-round sunshine Miami, FLTropical running Honolulu, HIIsland paradise runs Washington, DCMonument runs Salt Lake City, UTMountain valley racing Boulder, CORunner's paradise Bend, ORTrail town USA Asheville, NCBlue Ridge running Duluth, MNNorth Shore trails Charleston, SCSouthern charm runs Savannah, GALive oak lined routes Santa Fe, NMHigh desert art town Key West, FLSouthernmost runs Maui, HIVolcanic island trails Napa Valley, CAWine country running United StatesRun clubs across United States

Solutions Pricing About Blog Developers Brand Terms Privacy

© 2026 Intervals

Races Clubs Train Wrapped

Fall Equinox — Fort Collins, CO

Races
United States
Colorado
Fall Equinox

Half Marathon Road Road Half Downhill Road Downhill

Fall Equinox

Sunday, September 20, 2026Fort Collins, CO5 Miles – Half Marathon

Experience the breathtaking beauty of Colorado's only designated Wild & Scenic River at this spectacular event. Runners will enjoy a scenic, downhill point-to-point course that winds through the stunning Poudre River Canyon. Starting at the iconic Mishawaka Amphitheater, the route offers a perfect opportunity to chase a new personal record or simply soak in the autumn atmosphere. Whether you choose the half marathon or the unique 5-mile distance, you will finish in a vibrant celebration featuring music and beer. This race is designed for everyone from competitive athletes to casual walkers who...

Races

Surface

Road

Temperature

Cool

Setting

Canyon

Waterfront

River

Area

Wilderness

Frequently asked questions

Location

Poudre Canyon

Fort Collins, CO 08524

Not affiliated with this event. Official website. We may earn a commission on registrations.

Sep 208:00 AM

Shirt

$75

$85 after Aug 1

Sep 208:00 AM

Shirt

$75

$85 after Aug 1

More races near Fort Collins

Heroes and Villains Half Marathon - Little Rock

Little Rock, AR

20 Yards1 Miles3.11 Miles+2

Alameda Island Running Festival

13.1 Miles6.2 Miles3.1 Miles+1

La Noche de las Brujas Run -SummerWeen Series 5K 10K Half by Califlow Runs

3.1 Miles6.2 Miles13.1 Miles+1

Harvest to Horizon Running Festival

13.1 Miles3.1 Miles1 Miles+1

Medal Madness 5K, 10K, & 13.1M at Mobile, AL (38)

5K10K13.1 Miles

Medal Madness 5K, 10K, & 13.1M at Fort Smith, AR (38)

5K10K13.1 Miles

23rd Annual Groom Creek Classic: 1/2 Marathon, 10k, 5k Run

13.1 Miles6.2 Miles3.1 Miles+1

Bayside Saved by the Bell 5K, 10K & Half Marathon

Canoga Park, CA

5K10K13.1 Miles+1

Run for Coffee 5k / 10k / 13.1 - Roseville

5K10K13.1 Miles

Autumn Run

Buena Vista, CO

13.1 Miles6.2 Miles3.1 Miles+1

Beulah Challenge and OverIt Series

13.1 Miles6.2 Miles3.1 Miles

Pikes Peak Ascent

Manitou Springs, CO