Running Races in Colorado — 2026

There are 269 running races in Colorado in 2026 across 73 cities. The next upcoming race is the DU Crimson Classic 5K Run/1.5 Mile Walk in Denver on October 21. Popular distances include 5K races, half marathons, ultras.

Superior Stocking Run

Sat, Dec 12 · Superior, CO Superior

Road 5K Run5K Youth Entry5k-5k-5k Winter Running Series +1

From $25 Open Closing Soon

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Santa Catch 5k & 10k

Sat, Dec 12 · Windsor, CO Windsor

Road 1 Mile Kids Fun RunSanta Catch 5KSanta Catch 10k

From $15 Open

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Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Sat, Dec 12 · 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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Santa Shuffle 5K

Sat, Dec 12 · Littleton, CO Littleton

Road Santa Shuffle 5K

From $35 Open Closing Soon

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Sleigh Bell Shuffle

Sat, Dec 12 · Loveland, CO Loveland

Road 1 Mile Fun Run

From $15 Open

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2026 Jingle Bell Run - Colorado

Sun, Dec 13 · Denver, CO Denver

Virtual 1 Mile5K TimedKids Run +1

From $25 Open Closing Soon

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Moonlight Race Series

Thu, Dec 17 · Glenwood Springs, CO Glenwood Springs

Rando Race 4Rando Race 2Rando Race 3 +5

From $25 Open

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Sweaty Sweater 5k

Sat, Dec 19 · Fort Collins, CO Fort Collins

Virtual Kids 1-MileSweaty Sweater 5kVirtual 5k

From $5 Open Closing Soon

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Santa's Dash for Ca$h

Sat, Dec 19 · Denver, CO Denver

Road 5k

From $29 Open Closing Soon

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Ugly Sweater 5K

Sun, Dec 20 · Denver, CO Denver

Road 5KVirtual 5K

From $30 Open

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A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA

Sat, Dec 26 · Centennial, CO Centennial

Virtual Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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New Year's Run 5K/10K/13.1 DENVER/AURORA

Sat, Dec 26 · 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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Hands & Voices New Year Virtual 5K: Trails to the Summit

Thu, Dec 31 · Boulder, CO Boulder

Virtual Virtual 5KVirtual Fun Run/Walk

From $25 Open

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run.Windsor Gift Cards

Thu, Dec 31 · Windsor, CO Windsor

$75$50$100 +1

From $25 Open

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Salida New Year's Day 5K

Fri, Jan 1 · Salida, CO Salida

Road 5K (no shirt)5K (with shirt)

From $24 Open

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Mission Crew Miles

Fri, Jan 1 · Anywhere, CO Anywhere

Virtual Mission Crew Miles Together

From $37 Open

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Resolute Runner 5k

Fri, Jan 1 · Arvada, CO Arvada

Road 5k

From $39 Open

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Rescue Run

Fri, Jan 1 · Colorado Springs, CO Colorado Springs

Road 5K10K

From $30 Open

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YMCA of Pueblo Hot Chocolate 5K

Sat, Jan 2 · Pueblo, CO Pueblo

Road YMCA of Pueblo Hot Chocolate 5K

From $30 Open

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Winter Series - The Coolest Race in Town!

Sat, Jan 9 · Colorado Springs, CO Colorado Springs

Road WS II Short: Cheyenne Mountain State ParkWS II Short: Cheyenne Mountain State ParkWS I Short: Garden of the Gods / Red Leg Brewing Company +17

From $40 Open

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Sentinel Flurry

Sat, Jan 9 · Golden, CO Golden

Road 1 Mile1 Mile & 5K Combo5K

From $25 Open

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All-Out Polar Prowl

Sat, Jan 9 · Arvada, CO Arvada

Virtual 5KVIRTUAL 5K10K +3

From $20 Open

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

Sat, Jan 16 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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ALMAGEDDON Winter Triathlon presented by the Alma Foundation

Sat, Jan 16 · Alma, CO Alma

Triathlon ALMAGEDDON Winter TriathlonALMAGeddon Winter Triathlon Relay

From $40 Open 60 spots left

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MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORA

Sat, Jan 16 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Open

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Colorado Cold Snap

Sun, Jan 17 · Louisville, CO Louisville

Road 5k10k

From $39 Open

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12 Hours of Sunlight

Sat, Jan 23 · Glenwood Springs, CO Glenwood Springs

12 Hours of Sunlight Team of 412 Hours of Sunlight Individual12 Hours of Sunlight Team of 2

From $65 Open

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Chilly Willy 5K/10K/Half Marathon - Colorado Springs

Sat, Jan 23 · Colorado Springs, CO Colorado Springs

Virtual 5K-No Shirt5KVirtual 5K +6

From $25 Open

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Freakin Freezin 5K - Denver

Sun, Jan 24 · Denver, CO Denver

Virtual 5K-No Shirt5KVirtual 5K

From $30 Open

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Redrum Run

Sun, Jan 24 · Estes Park, CO Estes Park

Road 7 MileKid's DashKids Mile +1

From $20 Open Closing Soon

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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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Rio Frio 5k

Sat, Jan 30 · Alamosa, CO Alamosa

Road Rio Frio 5k Fun Run

From $20 Open

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Run for Donut DENVER/AURORA

Sat, Jan 30 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run 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 Closing Soon 5 spots left

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Alley Loop

Sat, Jan 30 · Crested Butte, CO Crested Butte

1.5K Freestyle | Kids Race3K Freestyle | Kids Race5K Freestyle +6

From $25 Open Closing Soon 15 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 Closing Soon 5 spots left

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Westy Winter Waggle 5&10k

Sat, Feb 6 · Westminster, CO Westminster

Road 5k10k

From $35 Open

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All-Out Mardi Crawl

Sat, Feb 6 · Arvada, CO Arvada

Virtual 5K5KVIRTUAL 5K +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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The Heathen Challenge

Sat, Feb 6 · Glenwood Springs, CO Glenwood Springs

Elite Division SkimoRec Division Skimo

From $65 Open

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Old Man Winter Bike Rally & Run

Sun, Feb 7 · Lyons, CO Lyons

Triathlon 5K Run10k RunHalf Marathon Run +9

From $49 Open

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

Sat, Feb 13 · 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 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

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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 Closing Soon

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Chilly Cheeks Duathlon

Sat, Feb 20 · Englewood, CO Englewood

Triathlon Duathlon RelayApproved Youth DuathlonDuathlon Relay +3

From $65 Open

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Run For Mental Health DENVER/AURORA

Sat, Feb 27 · 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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Run Together Against Breast Cancer DENVER/AURORA

Sat, Feb 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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Highlands Ranch 5k

Sun, Feb 28 · Highlands Ranch, CO Highlands Ranch

Road 5k5k

From $33 Open

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Defiance Challenge

Fri, Mar 5 · Glenwood Springs, CO Glenwood Springs

Defiance ChallengeDefiance Challenge

From $75 Open

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