5K Races in Colorado — 2026

There are 258 5K races in Colorado scheduled for 2026. The next is the 6th Annual Skidola: Telluride's Winter Uphill Race in Telluride on March 13. Colorado 5K races run primarily March through February.

DU Dash Colorado

Sun, Jun 7 · Palmer Lake, CO Palmer Lake

5K10KYouth Dash

From $30 Open

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BRR All-Comers Summer Track & Field Series #1

Thu, Jun 11 · Boulder, CO Boulder

3000m100M200M +11

From $0 Open 15 spots left

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The Springs Downhill Mile

Sat, Jun 13 · Colorado Springs, CO Colorado Springs

The Springs Downhill Mile

From $15 Open

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Stepping Stone 5K

Sat, Jun 13 · Littleton, CO Littleton

2.5K Shortcut5K Virtual Run5K

From $30 Open

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Howelsen Hill Trail Run

Sat, Jun 13 · Steamboat Springs, CO Steamboat Springs

4 MileHowelsen 8 Mile

From $25 Open

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Treat Trot Denver

Sat, Jun 13 · Thornton, CO Thornton

5K10K15K +4

From $17 Open Closing Soon

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All-Out Summer Breeze

Sat, Jun 13 · Arvada, CO Arvada

VIRTUAL 5K5KVIRTUAL 10K +3

From $25 Open Closing Soon

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Treat Trot Colorado Springs

Sun, Jun 14 · Colorado Springs, CO Colorado Springs

5K10K15K +4

From $17 Open Closing Soon

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Parker Parks and Recreation Dash Across the Dam Father’s Day 5K

Sat, Jun 20 · Parker, CO Parker

5K

From $40 Open

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

Sat, Jun 20 · Centennial, CO Centennial

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

From $30 Open

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Havoc at HartFit OCR 3k

Sat, Jun 20 · Peyton, CO Peyton

KIDS HartFit HAVOC 1 MileHavoc at HartFit OCR 3k

From $29.99 Open 10 spots left

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Fatherhood 5k Family Run/Walk

Sat, Jun 20 · Colorado Springs, CO Colorado Springs

Adult 5kYouth 8-18 yrsFamily Pricing (Immediate Family)

From $15 Open

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Unicorn 5k (North)

Sat, Jun 20 · Thornton, CO Thornton

1/2 (ish) Mile Saunter - untimed5k Run/Walk

From $16 Open

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Sierra's 5K Run/Walk Race Against Meningitis

Sat, Jun 20 · Loveland, CO Loveland

5K RunKids Fun Run (10 & Under)

From $10 Open Closing Soon

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Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA

Sat, Jun 20 · Centennial, CO Centennial

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

From $30 Open

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Red, White and Brew 5k, 10k & Half Marathon

Sat, Jun 20 · Windsor, CO Windsor

Kids Fun Run5k run or walk5k Ruck +3

From $15 Open

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Father's Day Classic 10k, 5k, & 1 Mile

Sun, Jun 21 · Arvada, CO Arvada

Manly Mile (TIMED - for MEN Only)1 Mile Fun Run (untimed)5k +3

From $8 Open

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SBT TRL

Sat, Jun 27 · Steamboat Springs, CO Steamboat Springs

5k10k

From $35 Open

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Slacker Half Marathon-Relay-4-Mile Races

Sat, Jun 27 · Georgetown, CO Georgetown

4-MileVirtual 4 Mile4 Mile - Military Veteran +4

From $35 Open

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Pearl Street Mile

Sat, Jun 27 · Boulder, CO Boulder

Pearl Street MileKids 800m

From $15 Open

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Denver Pride 5K

Sat, Jun 27 · Denver, CO Denver

Denver Pride 5K

From $40 Open

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Before The Fourth 5k

Sat, Jun 27 · Littleton, CO Littleton

Before The Fourth 5k

From $35 Open

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Greeley Freedom 5k Walk & Run

Sat, Jul 4 · Greeley, CO Greeley

5k Walk5k Run

From $30 Open

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Burro Buster 5k

Sat, Jul 4 · Fairplay, CO Fairplay

5k

From $35 Closed

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Durango Main Avenue Mile

Sat, Jul 4 · Durango, CO Durango

Main Avenue Mile

From $15.81 Open

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

Sat, Jul 4 · Centennial, CO Centennial

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

From $30 Open

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July 4th Run 5K/10K/13.1 DENVER/AURORA

Sat, Jul 4 · Centennial, CO Centennial

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

From $30 Open

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Avery Brewing Co. 4K on the 4th

Sat, Jul 4 · Boulder, CO Boulder

Avery Brewing Co. 4K on the 4th

From $40 Open

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FireKracker 5k

Sat, Jul 4 · Fort Collins, CO Fort Collins

Kids 1-MileFireKracker 5kElite 5k

From $5 Open

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Let Freedom Run 5k - LONGMONT

Sat, Jul 4 · Longmont, CO Longmont

5k Run/Walk

From $30 Open

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40th Annual Boogie's Buddy Race

Sat, Jul 4 · Aspen, CO Aspen

Boogie's Buddy 1-Mile Family Fun Run/Walk (Family Registration)Boogie's Buddy 5K RaceBoogie's Buddy 5-Mile Race

From $40 Closed

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Loveland Liberty 5K

Sat, Jul 4 · Loveland, CO Loveland

5KVirtual 5K

From $35 Open

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Pueblo's Firecracker 5k!

Sat, Jul 4 · Pueblo, CO Pueblo

Pueblo's Firecracker 5k!

From $19 Open

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Let Freedom Run 5k/10k - Louisville

Sat, Jul 4 · Louisville, CO Louisville

5k10k

From $30 Open

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Palmer Lake July 4th - 4M

Sat, Jul 4 · Palmer Lake, CO Palmer Lake

July 4 Fun Run - VIRTUAL RACE Elementary Student and YoungerJuly 4 Fun Run - AdultJuly 4 Fun Run - Middle School and High School Student +3

From $25 Closed

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Sheep Creek Triathlon

Sat, Jul 4 · Antonito, CO Antonito

TriathlonShirt Purchase Only

From $20 Open

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Red Feather Lakes 3.6 Mile Fun Run

Sat, Jul 4 · Red Feather Lakes, CO Red Feather Lakes

Red Feather Lakes 3.6 Mile Fun Run

From $40 Open

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HRCA Independence Day 5K

Sat, Jul 4 · Littleton, CO Littleton

5K Run/Walk

From $40 Open

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Red, White, and WARRIOR 5K

Sat, Jul 4 · Grand Junction, CO Grand Junction

Red, White, and WARRIOR 5KLittle Sparkler Sprint

From $10 Open

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Pagosa Duathlon

Sat, Jul 11 · Pagosa Springs, CO Pagosa Springs

Dusty KidsDirty SprintDirty Du

From $15 Open

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Heatwave Half Marathon - Denver

Sat, Jul 11 · Denver, CO Denver

1 Mile5 K10 K +5

From $17 Open Closing Soon 5 spots left

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Cookie Chase

Sat, Jul 11 · Denver, CO Denver

Virtual 5K5K

From $30 Open

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All-Out Dog Days

Sat, Jul 11 · Westminster, CO Westminster

VIRTUAL 5K5K10K +3

From $25 Open

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Heatwave Half Marathon - Colorado Springs

Sun, Jul 12 · Colorado Springs, CO Colorado Springs

1 Mile5 K10 K +5

From $17 Open Closing Soon 5 spots left

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Rocky Mountain State Games - Swim / Run

Sun, Jul 12 · Colorado Springs, CO Colorado Springs

Swim / Run - 5-8yrsSwim / Run - 9-15yrsSwim / Run - 16+ yrs

From $25 Open

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RMRR July Trophy Series

Sun, Jul 12 · Lakewood, CO Lakewood

2mi

From $10 Open

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Spring Creek Memorial Trail Run

Sat, Jul 18 · Steamboat Springs, CO Steamboat Springs

5k9.5 Mile

From $25 Open 100 spots left

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Heritage Eagles 5K

Sat, Jul 18 · Littleton, CO Littleton

Heritage Eagles 5K

From $25 Open

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Summer Splash Prairie Dog Half, 10k, & 5k

Sat, Jul 18 · Castle Rock, CO Castle Rock

5k10kHalf Marathon

From $25 Open

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

Sat, Jul 25 · Centennial, CO Centennial

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

From $30 Open

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