5Ks in Colorado

Colorado has 118 upcoming 5Ks. The 5K is the most popular race distance in America — short enough for first-timers, fast enough for seasoned runners chasing a PR.

118 upcoming races listed

Fun races Scenic races Competitive races Quirky races Festive races For a Cause races Beginner-friendly

Dash for Detection: Oral Cancer Awareness 5K

This mission-driven 5K, focused on oral cancer awareness, is postponed to 2027. Organizers are dedicated to their cause and planning for next year.

For a Cause

Sat, Apr 11, 2026, 8:00 AM MDT3.1 MilesDenver, CO

EasygoingRUN

Course · Rolling · Timed race

Rockin on the River 5K

Enjoy a scenic 5K along the South Platte River with live music and a casual, welcoming vibe. Show off your favorite running tee.

Fun
Scenic

Sat, Apr 11, 2026, 9:00 AM MDT3.1 MilesLittleton, CO

Steady EffortRUN

Course · Hilly · Timed race

ASDAsh 5K to Beat Tooth Decay

Run a revamped campus 5K, conquer the "Meatball Mile" Strava Segment, and support vital dental care for Colorado veterans.

Fun
Competitive
Quirky
For a Cause

Sat, Apr 11, 2026, 9:30 AM MDT5KAurora, CO

Steady EffortRUN

Course · Hilly · Walkers welcome

Hop Into Spring 5K - Denver

Shake off winter and celebrate spring's arrival on a flat, friendly 5K course with awards for top finishers and age groups.

Fun
Competitive
Festive

Sun, Apr 12, 2026, 8:00 AM MDT5KDenver, CO

Steady EffortRUN

Course · Rolling · Walkers welcome

Donut Dash

Enjoy a flat, fast 5K in Denver, then celebrate your finish with fresh donuts. A sweet and speedy start to your Sunday.

Fun
Competitive
Quirky

Sun, Apr 12, 2026, 9:00 AM MDT5KDenver, CO

Steady EffortRUN

Course · Rolling · Walkers welcome

Earth Day 5K

Celebrate Earth Day with a fun, zero-waste 5K run/walk on the Animas River Trail, supporting vital immigrant services in Durango.

Inaugural
Fun
Festive
For a Cause

Sat, Apr 18, 2026, 8:30 AM MDT5KDurango, CO

Push PotentialRUN

Course · Hilly · Walkers welcome

The Rocky Run by Eldorado PK-8 PTO

Run for a cause with The Rocky Run, directly supporting over 700 children and enriching educational programs at Eldorado PK-8 in Superior, CO.

For a Cause

Sat, Apr 18, 2026, 9:00 AM MDT3.1 MilesSuperior, CO

Steady EffortRUN

Course · Hilly · Timed race

Woody's Tortoise And Hare

A unique 5K where a handicap system levels the playing field, focusing purely on your conditioning and training, not age or gender.

Competitive
Quirky

Sat, Apr 18, 2026, 9:00 AM MDT5KFountain, CO

Steady EffortRUN

Course · Hilly · Timed race

2026 Fairmount Fit Fest

Embrace your inner K-Pop Demon Hunter at this family-friendly event featuring a 5K, fun run, and a Ninja Warrior course.

Fun
Competitive
Quirky
For a Cause

Sun, Apr 19, 2026, 9:00 AM MDT5KGolden, CO

Steady EffortRUN

Course · Hilly · Walkers welcome

SOAR 5K

A family-friendly 5K and Kids Fun Run in Golden, CO, supporting Welchester Elementary PTA with a scenic course and a festive activity village.

Fun
Scenic
Festive
For a Cause

Sat, Apr 25, 2026, 8:00 AM MDT3.1 MilesGolden, CO

Steady EffortRUN

Course · Hilly · Family-oriented

Strut for Mutts 2026

A heartwarming 3-mile event in Rifle, CO, where you and your dog can walk, jog, or run to support shelter animals in need.

Fun
Quirky
For a Cause

Sat, Apr 25, 2026, 9:00 AM MDT3 MilesRifle, CO

Steady EffortRUN

Course · Hilly · Timed race

Alpine Autism Center 19th Annual "Run for the One" 5k Walk/Run

Run or walk a 5K to support families affected by Autism in the Pikes Peak Region at this 19th annual event.

Competitive
For a Cause

Sat, Apr 25, 2026, 10:00 AM MDT3.1 MilesColorado Springs, CO

Push PotentialRUN

Course · Hilly · Walkers welcome

2026 Flying Pig 5K

Run, walk, or roll for a cause at the Flying Pig 5K, a family-friendly event supporting children's programs at Foothills Gateway.

Fun
Quirky
For a Cause

Sun, Apr 26, 2026, 9:00 AM MDT3.1 MilesFort Collins, CO

EasygoingRUN

Course · Rolling · Family-oriented

Unicorn 5k (Denver-East)

Gallop, trot, or walk through Denver's Great Lawn Park in this whimsical, untimed 5k, complete with unicorn medals and a costume contest.

Fun
Quirky

Sun, Apr 26, 2026, 9:30 AM MDT3.1 MilesDenver, CO

EasygoingRUN

Course · Rolling · Timed race

2026 Dash & Dine 5k Run Series

A beloved spring 5k series in Boulder, perfect for sharpening your race skills and enjoying a friendly, post-race dinner by the reservoir.

Fun
Scenic
Competitive

Tue, Apr 28, 2026, 6:30 PM MDT5KBoulder, CO

Steady EffortRUN

Course · Hilly · Family-oriented

Friends of the National Center Science Stride 5K

Support STEM education and inspire future scientists at this community-focused 5K, welcoming all abilities in Boulder or virtually.

Fun
For a Cause

Fri, May 1, 2026, 9:30 AM MDT3.1 MilesBoulder, CO

Steady EffortRUN

Course · Hilly · Walkers welcome

Adams County Foster Care 5K Run/Walk and 1 mile fun run

Run or walk a scenic 5K or 1-mile fun run at Riverdale Regional Park, with all proceeds supporting Foster Families of Adams County.

Fun
Scenic
Competitive
For a Cause

Sat, May 2, 2026, 7:30 AM MDT5KBrighton, CO

Steady EffortRUN

Course · Rolling · Walkers welcome

DU Spring Sprint 5k

A welcoming 5K road race around Western Colorado University campus, celebrating spring and supporting a charitable cause.

Fun
Scenic
Festive
For a Cause

Sat, May 2, 2026, 9:00 AM MDT3.2 MilesGunnison, CO

Steady EffortRUN

Course · Road · Hilly · Walkers welcome

CollaBEERation 5k & Brew Fest Party

Run a scenic 5K, then celebrate with friends at a lively post-race Brew Fest featuring beer, cider, music, and good times.

Fun
Scenic
Competitive
Quirky
Festive

Sat, May 2, 2026, 10:00 AM MDT3.1 MilesLongmont, CO

EasygoingRUN

Course · Rolling · Timed race

Walk Run or Roll for Daniel

A commemorative 5K walk/run or 15-mile bike ride in Colorado Springs, honoring Daniel Giffin and supporting pediatric brain cancer research.

Festive
For a Cause

Sat, May 2, 2026, 10:00 AM MDT5KColorado Springs, CO

Steady EffortRUN

Course · Hilly · Walkers welcome

Water Wells for Africa 5k Walk/Run

Run or walk the 10th Annual Water Wells for Africa 5k, directly funding clean water initiatives and building wells in Malawi.

For a Cause

Sun, May 3, 2026, 9:00 AM MDT5KSilt, CO

Steady EffortRUN

Course · Hilly · Walkers welcome

Frank Shorter Track Classic

A competitive track meet honoring Frank Shorter, featuring heats for middle and long-distance runners at Niwot High School.

Competitive
Festive

Sun, May 3, 2026, 11:00 AM MDT5000mLongmont, CO

Steady EffortRUN

Course · Rolling · Timed race

Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek

A scenic Mother's Day 5K and family walk in Parker, CO, supporting local scholarships and featuring a fun duck hunt for kids.

Fun
Scenic
Competitive
Quirky
Festive

Sat, May 9, 2026, 8:00 AM MDT3.1 MilesParker, CO

Steady EffortRUN

Course · Hilly · Walkers welcome

HRCA Mother's Day 5K

A festive Mother's Day 5K in Highlands Ranch, perfect for families, featuring a fun kettlebell hunt and a pancake breakfast.

Fun
Quirky
Festive

Sat, May 9, 2026, 9:00 AM MDT3.1 MilesHighlands Ranch, CO

Steady EffortRUN

Course · Hilly · Family-oriented

See all 118 5Ks in Colorado →

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More 5K races

All races in Colorado 5Ks in Denver, CO 5Ks in Centennial, CO 5Ks in Colorado Springs, CO 5Ks in Fort Collins, CO 5Ks in Littleton, CO 5Ks in Arvada, CO 5Ks in Westminster, CO 5Ks in Boulder, CO 5Ks in Loveland, CO 5Ks in Steamboat Springs, CO 5Ks in Durango, CO 5Ks in Golden, CO 5Ks in Aurora, CO 5Ks in Longmont, CO 5Ks in Thornton, CO

Other distances in Colorado

10Ks in Colorado Half Marathons in Colorado Marathons in Colorado