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Races in Colorado
218 Events
Endurance Races in Colorado
Trehko tracks 218 endurance events in Colorado, including 205 Running events, 3 Triathlon events, 8 Trail Running events, 2 Cycling events. Whether you're searching for your first 5K, a Boston qualifier marathon, a local triathlon, or a trail ultra, Colorado has a race for every athlete. Use Trehko to compare registration fees and deadlines side by side, save your target races, and get automated reminders before registration opens or closes. All races listed below link directly to their official registration pages.
All 218 Races in Colorado
12th edition Sole Mates 5k & Brew Fest presented by Shoes & Brews and Left Hand Brewing — Longmont, 5K 18 Hours of Fruita — Loma, Road Race 2026 Jingle Bell Run - Colorado — Denver, 5K 2026 Loveland Turkey Trot — Loveland, Road Race 2027 C.O.P.S. WINTER RACE SERIES — Golden, Road Race 2027 Lake Nighthorse Triathlon - Sprint and Olympic — Durango, Olympic 22nd Annual Run Through Time Trail Marathon and Half Marathon — Salida, Half Marathon 4A Region 3 XC STATE Qualifier — Northglenn, Road Race A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon AdventHealth Avista Louisville Turkey Trot — Louisville, Road Race Alamosa Veterans Memorial Park Race — Alamosa, 5K All-Out Beat the Heat — Westminster, Half Marathon All-Out Fa La La — Westminster, Half Marathon All-Out Kooky-Spooky — Golden, Half Marathon All-Out Mardi Crawl — Arvada, Half Marathon All-Out Polar Prowl — Arvada, Half Marathon All-Out Spring Fever — Golden, Half Marathon All-Out Summer Breeze — Arvada, Half Marathon ALMAGEDDON Winter Triathlon presented by the Alma Foundation — Alma, Sprint Tri Alpha 5K Challenge — Boulder, 5K Alpine Bank Boulder Thanksgiving Day 5K — Boulder, 5K Always Hope Easter Run DENVER/AURORA — Centennial, 5K Apex Foundation Trick or Trot 5K & Halloween Hunt — Arvada, 5K Bell Ringer 2 Miler — Loveland, Road Race Bigfoot Half Marathon — Estes Park, Half Marathon Break a Leg 5k — Grand Junction, 5K Broomfield Turkey Day 5K/10K — Broomfield, 10K BSBF 2- Mile Fun Run - Bell Ringer — Loveland, Road Race Buena Vista Turkey Trot 5K & Family Fun Run — Buena Vista, 5K Candy Cane Course - Colorado Springs — Colorado Springs, 1 Mile Candy Cane Course - Denver — Westminster, 1 Mile Canya Cañon Trail Race & Hike — Colorado Springs, Trail Run Central Park 5k — Denver, 5K Chase the Glow — Estes Park, Road Race Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law Group — Colorado Springs, 5K Chilly Cheeks Duathlon — Englewood, Sprint Tri Chilly Willy 5K/10K/Half Marathon - Colorado Springs — Colorado Springs, Half Marathon Christmas Mountain 5 Mile Run — Salida, Road Race City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research) — Denver, 10K Coffee Lover Run DENVER/AURORA — Centennial, 5K Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA — Centennial, 5K/10K/13.1 Colleen De Reuck XC Classic — Boulder, 5K Colorado 13er (Half Marathon/10k/5k) — Louisville, Half Marathon Colorado 24 Hour Run — Fort Collins, Road Race Colorado 2A Region 4 — Mancos, Road Race Colorado Cold Snap — Louisville, 5K Colorado Springs Veterans Day 5k — Colorado Springs, 5K Colorado State Youth Cross Country Championships — Aurora, Road Race Colorado Women's Classic - Westminster — Westminster, 5K Colterris Wine Run 5k — Palisade, 5K Cookie Chase — Denver, 5K Denver Colfax Marathon — Denver, Marathon Denver Mother's Day 5K — Denver, 5K Denver Veterans Day Run — Denver, 5K Dog Days of Summer — Longmont, Road Race DoNot Stop Half Marathon/5K/10K - Colorado Springs — Colorado Springs, Half Marathon DoNot Stop Half Marathon/5K/10K - Denver — Denver, Half Marathon Donut Dash — Denver, 5K Dragon Dash 5K Run/Walk — Denver, 5K Durango Turkey Trot presented by Animas Surgical Hospital — Durango, Road Race Eldorado Run for the Cure — Eldorado Springs, Road Race Emerge 5K — Boulder, 5K Endure Trail Runs — Divide, 10K Erin Go Bragh 7.77k — Westminster, Road Race Evergreen Mountain Weeknight Race — Evergreen, Trail Run Excel Eagle Trot 5K/1K Family Fun Run — Arvada, 5K Fall Skyline Traverse — Boulder, Road Race Father's Day Classic 10k, 5k, & 1 Mile — Arvada, 10K Feet for Justice Run — Denver, 10K Fitness Avenue Turkey Trot 5K — Johnstown, 5K Flamingo Day 5K — Denver, 5K Fort Collins Thanksgiving Day Run — Fort Collins, Road Race Freakin Freezin 5K - Denver — Denver, 5K Ghosts and Goblins 5K/10K — Denver, 10K Girls on the Run Denver Metro 5K — Denver, 5K Girls on the Run Northern Colorado Fall 5K — Fort Collins, 5K Gobble Wobble Run 2026 — Littleton, 5K Grand Junction Fire Fighters Foundation GJ Turkey Trot — Grand Junction, 5K Grand Valley Brew Runs — Grand Junction, 5K Grand Valley Oncology - Life In Color 5K — Grand Junction, 5K Greeley Freedom 5k Walk & Run — Greeley, 5K Greenland Trail Races — Larkspur, 50K Grin & Bear It — Crested Butte, 5K Halloween 5K Fundraiser! — Grand Junction, 5K Halloween Fun 5k — Steamboat Springs, 5K Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon Harvesting Hope 5k — Denver, 5K Heart Throb 5k — Arvada, 5K Highlands Ranch 5k — Highlands Ranch, 5K Hometown Half Marathon/5K/10K - Colorado Springs — Colorado Springs, Half Marathon Hometown Half Marathon/5K/10K - Denver — Denver, Half Marathon Hoofin' It Through the Hollows 5K — Centennial, 5K Horsetooth Half Marathon - Presented by Fort Collins Connexion — Fort Collins, Half Marathon HRCA Backcountry Wilderness Half Marathon — Lone Tree, Half Marathon I Ain't Scared (of 5k) — Thornton, 5K Independence Day Freedom 5K — Buena Vista, 5K James Pre-Paid Teams Test — Lyons, 12K James Test Site — Lyons, 5K Jingle Jog 5k and Fun Run — Eagle, 5K Kennebec Mountain Run — Hesperus, Road Race Kessel Run Ultra — Fruita, 50 Mile KowTown Gravel — Kremmling, Gravel Let Freedom Run 5k/10k - Louisville — Louisville, 10K Leyden Rock Turkey Trot 5K — Arvada, 5K Lone Tree Reckoning Heavy 15K and 5K — Loveland, 15K Longmont Half & 5k (LM Half) — Longmont, Half Marathon Lucky Brew Race 5K, 10K, 15k & Half Marathon — Severance, Half Marathon M1LE Nation Challenge — Fort Collins, Road Race Mancos Cowboy Half Marathon, 5K, and Fun Run — Mancos, Half Marathon McGraw Memorial Park "Quick Draw @ McGraw" 2.1 & 12.6 Mile Trail Races — Bailey, Trail Run MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon NCMC Turkey Trot — Greeley, 5K New Year's Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon NoCo Urban Ultra & Relay — Bellvue, 50 Mile NoCo Urban Ultra & Relay — Bellvue, Relay Onesie Dash AND Mini Dash — Red Feather Lakes, Road Race Parker Parks and Recreation Turkey Day 5K FUN Run/Walk — Parker, 5K Pat's Pony Express — Woodland Park, Road Race Paws for Life Fun Run/Walk 5K - Sponsored by Imperial Memorial Gardens — Pueblo, 5K PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon Pelican Lakes Turkey Trot — Windsor, 5K Platte River Half-Marathon, Relay & 5k — Littleton, Half Marathon Popsicle 5K/10K/Half - Colorado Springs — Colorado Springs, 10K Pumpkin Pie 5K/10K — Denver, 10K Race in the Clouds - Alma Dirt Festival 2027 — Alma, MTB Race to Cure Sarcoma Denver — Denver, 5K Ralston Creek Half Marathon & 5k — Arvada, Half Marathon Ram Run 5K — Denver, 5K Red, White and Brew 5k, 10k & Half Marathon — Windsor, Half Marathon Red, White, and WARRIOR 5K — Grand Junction, 5K Resolute Runner 5k — Arvada, 5K Resolution Run - Fort Collins — Fort Collins, 5K Rio Frio 5k on Ice — Alamosa, 5K RMRR December 4.5mi — Denver, Road Race RMRR November 5k/15k — Denver, 15K RoC & Roll 5K: Run, Walk, or Wheel — Fountain, 5K Rock Canyon Half Marathon- 40th Anniversary Run! — Pueblo, Half Marathon Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA — Centennial, 5K/10K/13.1 Run for Chocolate 5k/10k/13.1 DENVER/AURORA — Centennial, Half Marathon Run for Donut DENVER/AURORA — Centennial, 5K Run For Mental Health DENVER/AURORA — Centennial, 5K Run for PB&J 5k/10k/13.1 DENVER/AURORA — Centennial, Half Marathon Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon Run Through The Decades 6K/7K/8K/Half - Colorado Springs — Colorado Springs, 8K Run Together Against Breast Cancer DENVER/AURORA — Centennial, 5K Salida New Year's Day 5K — Salida, 5K Salute to Veterans 5K/10K/Half Marathon - Colorado Springs — Colorado Springs, Half Marathon Salute to Veterans 5K/10K/Half Marathon - Denver — Aurora, Half Marathon Samson's Revenge — Estes Park, 10K Sangre de Cristo Trail Festival — Westcliffe, Trail Run Santa Catch 5k & 10k — Windsor, 10K Santa Shuffle 5K — Littleton, 5K Santa's Dash for Ca$h — Denver, 5K Sawmill Trail Runs — Pine, Trail Run Sharin' O' The Green 5k — Fort Collins, 5K Silverheels Trail Runs — Como, 10 Mile Spirit of the West 5K Run/Walk — Golden, 5K Spooky Sprint - Colorado Springs — Colorado Springs, 1 Mile Spring Equinox — Wellington, Half Marathon Spring Fling Prairie Dog Half, 10k, & 5k — Arvada, Half Marathon St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon Stories Trail Runs — Colorado Springs, Trail Run Summer Sizzler- Colorado Springs — Colorado Springs, 1 Mile Summer Sizzler- Denver — Denver, 1 Mile Summer Vibes Bike Rally & Run Festival — Lyons, Gravel Summits Trail Runs — Granby, Trail Run Sunrise Marathon 5K/10K/13.1 DENVER/AURORA — Centennial, Marathon SuperHeroes Run DENVER/AURORA — Centennial, 5K Superior Stocking Run — Superior, 5K Sweaty Sweater 5k — Fort Collins, 5K Tardy Turkey Trot — Estes Park, 5K Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon The 14th Annual Odyssey Odyssey - 2026 — Denver, 5K The Colorado Marathon — Fort Collins, Marathon The Denver 5k — Denver, 5K The Grand Traverse — Crested Butte, Road Race The Pilgrimage Run 2026 — Erie, Road Race The Steamboat Marathon — Steamboat Springs, Marathon The Toyota Super Half Marathon™& Game Day 5K™ — Colorado Springs, Half Marathon The Unselfish Ultra — Golden, 50K The Wash Park Circuit, Powered by New Balance — Denver, Road Race Three Creeks Half Marathon — Englewood, Half Marathon Tiger 5K Trail — Colorado Springs, 5K Time to Paddy 5K/10K & Lucky 13.1 - Colorado Springs — Colorado Springs, Half Marathon Time to Paddy 5K/10K & Lucky 13.1 13.1 - Denver — Denver, Half Marathon Time Travel Half-Marathon/5K/10K - Colorado Springs — Colorado Springs, Half Marathon Time Travel Half-Marathon/5K/10K - Denver — Westminster, Half Marathon Toy Drop — Loveland, 5K Treat Trot - Denver — Denver, 1 Mile Treat Trot Colorado Springs — Colorado Springs, 1 Mile TurCreek Trot 5K — Greenwood Village, 5K Turkey Trails - Colorado Springs — Colorado Springs, 1 Mile Turkey Trails- Denver — Littleton, Trail Run TURKEY TREK (13.1, 10k, 5k & 2k) — Arvada, Half Marathon Turkey Trot Predict — Colorado Springs, 5K Ugly Sweater 5K — Denver, 5K Unicorn 5k (Denver-East) — Denver, 5K Unicorn 5k (North) — Thornton, 5K Unicorn 5k (South) — Highlands Ranch, 5K Valentine's Day Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon Vallecito Lake Heavy Half — Bayfield, Half Marathon Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA — Centennial, Half Marathon Weld Your Mettle Running Festival — Eaton, 50 Mile Weld Your Mettle Running Festival — Eaton, Relay Westy Winter Waggle 5&10k — Westminster, 10K Winter Park Turkey Trot 5K — Winter Park, 5K Winter Series - The Coolest Race in Town! — Colorado Springs, Road Race WinterFest 5k & Fun Run — Thornton, 5K Woodmen Hills Monster Mash 5k and Beer Run — Peyton, 5K Yeti Chase 5k/10k — Morrison, 10K YMCA Creepy Crawl 5K presented by Corwin Honda — Palmer Lake, 5K YMCA Jingle Jog 5K presented by Corwin Honda — Fountain, 5K YMCA of Pueblo Hot Chocolate 5K — Pueblo, 5K YMCA of Pueblo Race Series — Pueblo, Road Race YMCA of Pueblo Spooky Sprint 5K — Pueblo, 5K YMCA of Pueblo Turkey Trot — Pueblo, Road Race YMCA Turkey Trot 5K presented by Corwin Honda — Colorado Springs, 5K Zedikiah Scholarship 5K — Denver, 5K
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