Running Races in Colorado — 2026

There are 290 running races in Colorado in 2026 across 80 cities. The next upcoming race is the Flying Falcon Downhill Mile in USAF Academy on October 10. Popular distances include 5K races, half marathons, ultras.

Coffee Lover Run DENVER/AURORA

Sat, Jan 30 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Run for Donut DENVER/AURORA

Sat, Jan 30 · Centennial, CO Centennial

Virtual Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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Time Travel Half-Marathon/5K/10K - Denver

Sat, Jan 30 · Westminster, CO Westminster

Virtual 1 Mile5K10K +4

From $15 Open 5 spots left

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Time Travel Half-Marathon/5K/10K - Colorado Springs

Sun, Jan 31 · Colorado Springs, CO Colorado Springs

Virtual 1 Mile5K10K +4

From $15 Open 5 spots left

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All-Out Mardi Crawl

Sat, Feb 6 · Arvada, CO Arvada

Virtual 5KVIRTUAL 5K5K +9

From $20 Open

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Stories Trail Runs

Sat, Feb 6 · Colorado Springs, CO Colorado Springs

Trail 10k10kHalf Marathon +11

From $60 Open

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Westy Winter Waggle 5&10k

Sat, Feb 6 · Westminster, CO Westminster

Road 5k10k

From $35 Open

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The Heathen Challenge

Sat, Feb 6 · Glenwood Springs, CO Glenwood Springs

Rec Division SkimoElite Division Skimo

From $65 Open

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Run for Chocolate 5K/10K/13.1 DENVER/AURORA

Sat, Feb 13 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

Register →

Valentine's Day Run 5K/10K/13.1 DENVER/AURORA

Sat, Feb 13 · Centennial, CO Centennial

Virtual Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Heart Throb 5k

Sat, Feb 13 · Arvada, CO Arvada

Road 5k

From $25 Open

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The Toyota Super Half Marathon™& Game Day 5K™

Sun, Feb 14 · Colorado Springs, CO Colorado Springs

Road 5KHalf Marathon

From $35 Open

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Chilly Cheeks Duathlon

Sat, Feb 20 · Englewood, CO Englewood

Triathlon Approved Youth DuathlonIndividual DuathlonIndividual Duathlon +3

From $65 Open

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Run Together Against Breast Cancer DENVER/AURORA

Sat, Feb 27 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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Run For Mental Health DENVER/AURORA

Sat, Feb 27 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration +3

From $30 Open

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Highlands Ranch 5k

Sun, Feb 28 · Highlands Ranch, CO Highlands Ranch

Road 5k5k

From $33 Open

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Time to Paddy 5K/10K & Lucky 13.1 13.1 - Denver

Sat, Mar 6 · Denver, CO Denver

Virtual 1 Mile1 Mile5K +11

From $17 Open 5 spots left

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Time to Paddy 5K/10K & Lucky 13.1 - Colorado Springs

Sun, Mar 7 · Colorado Springs, CO Colorado Springs

Virtual 1 Mile1 Mile5k +11

From $17 Open 5 spots left

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Erin Go Bragh 7.77k

Sat, Mar 13 · Westminster, CO Westminster

Road 7.77k7.77k

From $33 Open

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Lucky Brew Race 5K, 10K, 15k & Half Marathon

Sun, Mar 14 · Severance, CO Severance

Road Kids Fun RunKids Fun RunLucky Brew 5K +7

From $15 Open

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Sunrise Marathon 5K/10K/13.1 DENVER/AURORA

Sat, Mar 20 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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All-Out Spring Fever

Sun, Mar 21 · Golden, CO Golden

Virtual VIRTUAL 5K5K5K +9

From $20 Open

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Spring Equinox

Sun, Mar 21 · Wellington, CO Wellington

Virtual Virtual 5k5kVirtual 5k +5

From $20 Open

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SuperHeroes Run DENVER/AURORA

Sat, Mar 27 · Centennial, CO Centennial

Virtual Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K Registration +3

From $30 Open

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Central Park 5k

Sun, Mar 28 · Denver, CO Denver

Road 5k Run/Walk5k Run/Walk

From $20 Open

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Donut Dash

Sun, Apr 4 · Denver, CO Denver

Road Virtual 5K5KVirtual 5K +1

From $30 Open

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Sloth Run 5K/10K/13.1 DENVER/AURORA

Sat, Apr 10 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration +3

From $30 Open

Register →

Run for PB&J 5k/10k/13.1 DENVER/AURORA

Sat, Apr 10 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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Platte River Half-Marathon, Relay & 5k

Sun, Apr 11 · Littleton, CO Littleton

Road 2027 5k5k5k +6

From $35 Open

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Spring Fling Prairie Dog Half, 10k, & 5k

Sun, Apr 11 · Arvada, CO Arvada

Road 5k5k10k +3

From $25 Open

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NoCo Urban Ultra & Relay

Sun, Apr 11 · Bellvue, CO Bellvue

Ultra 50 Mile (Relay)50 Mile (Relay)50 Mile (Individual) +5

From $65 Open

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Horsetooth Half Marathon - Presented by Fort Collins Connexion

Sun, Apr 18 · Fort Collins, CO Fort Collins

Road Half MarathonHalf Marathon

From $75 Open

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Coffee Lover Run DENVER/AURORA

Sat, Apr 24 · Centennial, CO Centennial

Virtual Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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Run for Donut DENVER/AURORA

Sat, Apr 24 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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Bigfoot Half Marathon

Sat, Apr 24 · Estes Park, CO Estes Park

Road 5K Run/Walk5K Run/WalkHalf Marathon +1

From $45 Open

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All-Out Beat the Heat

Sat, Apr 24 · Westminster, CO Westminster

Virtual VIRTUAL 5KVIRTUAL 5K5K +9

From $20 Open

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DoNot Stop Half Marathon/5K/10K - Colorado Springs

Sat, Apr 24 · Colorado Springs, CO Colorado Springs

Virtual 1 Mile1 Mile5K +13

From $0 Open 5 spots left

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Unicorn 5k (Denver-East)

Sun, Apr 25 · Denver, CO Denver

Road 5k5k1/2 Mile(ish) Saunter +1

From $13 Open

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DoNot Stop Half Marathon/5K/10K - Denver

Sun, Apr 25 · Denver, CO Denver

Virtual 1 Mile1 Mile5K +11

From $17 Open 5 spots left

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Greenland Trail Races

Sat, May 1 · Larkspur, CO Larkspur

Ultra 4 Mile4M Trail Races8M Trail Race +9

From $25 Open

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Longmont Half & 5k (LM Half)

Sun, May 2 · Longmont, CO Longmont

Road 5k5kHalf Marathon +1

From $35 Open

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The Colorado Marathon

Sun, May 2 · Fort Collins, CO Fort Collins

Road 2027 10k5K5K +9

From $35 Open

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Colterris Wine Run 5k

Sat, May 8 · Palisade, CO Palisade

Road 5k5k

From $30 Open

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Hometown Half Marathon/5K/10K - Colorado Springs

Sat, May 8 · Colorado Springs, CO Colorado Springs

Virtual 1 Mile1 Mile5k +11

From $17 Open 5 spots left

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Run for Chocolate 5k/10k/13.1 DENVER/AURORA

Sat, May 8 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

Register →

Hometown Half Marathon/5K/10K - Denver

Sun, May 9 · Denver, CO Denver

Virtual 1 Mile1 Mile5K +11

From $17 Open 5 spots left

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Colorado Women's Classic - Westminster

Sun, May 9 · Westminster, CO Westminster

Road 5k5k10k +3

From $35 Open

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Run the Spruce 5K and 1K Fun Run

Sat, May 22 · Palmer Lake, CO Palmer Lake

Road Run the Spruce 1K Fun RunRun the Spruce 5K

From $20 Open

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SuperHeroes Run DENVER/AURORA

Sat, May 29 · Centennial, CO Centennial

Virtual Family 1 Mile Fun RunVirtual Run Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Weld Your Mettle Running Festival

Sat, Jun 5 · Eaton, CO Eaton

Virtual 7K Ruck (4.3 Miles)7K Ruck (4.3 Miles)7k walk or run (4.3 miles) +23

From $35 Open

Register →