5K Races , Co

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15K

Starts 6/13/2026, 12:00:00 AM

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5K

Starts 6/13/2026, 12:00:00 AM

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Barr Lake

📍 Brighton, CO•📅 Saturday, Jun 13, 2026•1 events

50K, 30K, Half Marathon, 15K, 5K

Love Hard 5k Fun Run

📍 Denver, CO•📅 Monday, Jun 1, 2026•6 events

3.1 Miles3.1 Miles3.1 Miles3.1 Miles3.1 Miles3.1 Miles

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3.1 Miles

Starts 6/13/2026, 1:00:00 PM• Current price: $35

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2.2 for 22q Walk/Run/Ride 2026

📍 Anywhere, CO•📅 Saturday, Jun 6, 2026•1 events

3.1 Miles

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3.1 Miles

Starts 6/14/2026, 10:00:00 AM• Current price: $30

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Ring the Springs

📍 Colorado Springs, CO•📅 Saturday, Jun 20, 2026•1 events

35K

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35K

Starts 6/20/2026, 12:00:00 AM

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Ring the Springs

📍 Colorado Springs, CO•📅 Saturday, Jun 20, 2026•1 events

100K, 50K, 35K

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

📍 Windsor, CO•📅 Saturday, Jun 20, 2026•3 events

13.1 Miles3.1 Miles3.1 Miles

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3.1 Miles

Starts 6/20/2026, 8:30:00 AM• Current price: $35

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13.1 Miles

Starts 6/20/2026, 7:30:00 AM• Current price: $65

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Fatherhood 5k Family Run/Walk

📍 Colorado Springs, CO•📅 Saturday, Jun 20, 2026•3 events

5K5K5K

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5K

Starts 6/20/2026, 1:00:00 PM• Current price: $35

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

📍 Arvada, CO•📅 Sunday, Jun 21, 2026•2 events

5K5K

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5K

Starts 6/21/2026, 7:30:00 AM• Current price: $25

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14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

📍 Boulder, CO•📅 Sunday, Jun 21, 2026•1 events

5K

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5K

Starts 6/21/2026, 8:00:00 AM• Current price: $30

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Sunset Trail Running Festival

📍 Boulder, CO•📅 Sunday, Jun 21, 2026•1 events

5K

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5K

Starts 6/21/2026, 12:00:00 PM• Current price: $35

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Juneteenth Fun Run 5K

📍 Denver, CO•📅 Sunday, Jun 21, 2026•2 events

3.1 Miles3.1 Miles

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3.1 Miles

Starts 6/21/2026, 12:00:00 PM• Current price: $35

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VIRTUAL 14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

📍 Boulder, CO•📅 Sunday, Jun 21, 2026•1 events

5K

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5K

Starts 6/21/2026, 12:00:00 PM• Current price: $30

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Slacker Half Marathon-Relay-4-Mile Races

📍 Georgetown, CO•📅 Saturday, Jun 27, 2026•4 events

13.1 Miles13.1 Miles13.1 Miles13.1 Miles

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13.1 Miles

Starts 6/27/2026, 12:01:00 AM• Current price: $90

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Evergreen Trail Race Series

📍 Evergreen, CO•📅 Saturday, May 30, 2026•3 events

5K5K5K

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5K

Starts 6/27/2026, 7:00:00 AM• Current price: $40

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Silverton Blue Ribbon 5k and 10k

📍 SILVERTON, CO•📅 Saturday, Jul 4, 2026•1 events

5K

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5K

Starts 7/4/2026, 12:00:00 AM

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Leadville Firecracker 5K

📍 Leadville, CO•📅 Saturday, Jul 4, 2026•2 events

5K5K - Youth under 18

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5K

Starts 7/4/2026, 12:00:00 AM

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5K - Youth under 18

Starts 7/4/2026, 12:00:00 AM

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Silverton Blue Ribbon 5k and 10k

📍 SILVERTON, CO•📅 Saturday, Jul 4, 2026•1 events

5K, 10K

Yankee Doodle Dash and Ruck

📍 Woodland Park, CO•📅 Saturday, Jul 4, 2026•1 events

10K, 5K

Leadville Firecracker 5K

📍 Leadville, CO•📅 Saturday, Jul 4, 2026•1 events

5K, 5K - Youth under 18

6th Annual July 4th ROCK-IT RUN

📍 Castle Rock, CO•📅 Saturday, Jul 4, 2026•2 events

13.1 Miles5K

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5K

Starts 7/4/2026, 12:00:00 PM• Current price: $43

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13.1 Miles

Starts 7/4/2026, 10:30:00 AM• Current price: $55

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Silverheels Trail Runs

📍 Como, CO•📅 Friday, Jul 10, 2026•1 events

63.1 Miles

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63.1 Miles

Starts 7/10/2026, 8:00:00 AM• Current price: $200

Register 63.1 Miles

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Heatwave Half Marathon - Denver

📍 Littleton, CO•📅 Saturday, Jul 11, 2026•4 events

13.1 Miles13.1 Miles5K13.1 Miles

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5K

Starts 7/11/2026, 7:00:00 AM• Current price: $32

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13.1 Miles

Starts 7/11/2026, 7:00:00 AM• Current price: $55

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DRMABPsi 1–5K Walk, Run & Roll

📍 Denver, CO•📅 Saturday, Jul 11, 2026•1 events

5K

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5K

Starts 7/11/2026, 12:00:00 PM• Current price: $35

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Heatwave Half Marathon - Colorado Springs

📍 Colorado Springs, CO•📅 Sunday, Jul 12, 2026•4 events

13.1 Miles13.1 Miles13.1 Miles5K

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5K

Starts 7/12/2026, 7:00:00 AM• Current price: $30

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13.1 Miles

Starts 7/12/2026, 7:00:00 AM• Current price: $42

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PNAAF 5K Wellness Challenge

📍 Colorado Springs, CO•📅 Thursday, Jul 16, 2026•2 events

5K5K

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5K

Starts 7/16/2026, 7:00:00 PM• Current price: $35

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49th Annual Manassa Pioneer Days 5K Run

📍 Manassa, CO•📅 Saturday, Jul 18, 2026•1 events

3.1 Miles

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3.1 Miles

Starts 7/18/2026, 8:00:00 AM• Current price: $20

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2026 OCA Colorado 5K Panda Run

📍 Denver, CO•📅 Saturday, Jul 18, 2026•1 events

5K

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5K

Starts 7/18/2026, 9:00:00 AM• Current price: $35

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Festival in the Clouds Firefighter 5K, Fun Run and Doggie Dash

📍 Alma, CO•📅 Saturday, Jul 18, 2026•3 events

5K Fun Run and Doggie Dash - Youth Racer 6-123.1 Miles5K Fun Run and Doggie Dash - Youth Racer 5 and Under

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3.1 Miles

Starts 7/18/2026, 11:30:00 AM• Current price: $30

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5K Fun Run and Doggie Dash - Youth Racer 5 and Under

Starts 7/18/2026, 11:30:00 AM• Current price: $0

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5K Fun Run and Doggie Dash - Youth Racer 6-12

Starts 7/18/2026, 11:30:00 AM• Current price: $10

Register 5K Fun Run and Doggie Dash - Youth Racer 6-12

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Spring Creek Memorial Trail Run

📍 Steamboat Springs, CO•📅 Saturday, Jul 18, 2026•1 events

3.1 Miles

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3.1 Miles

Starts 7/18/2026, 12:30:00 PM• Current price: $25.75

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One Is Too Many: Veteran Suicide Awareness 5k and Kids Run

📍 Greeley, CO•📅 Sunday, Jul 19, 2026•1 events

3.1 Miles

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3.1 Miles

Starts 7/19/2026, 12:00:00 PM• Current price: $30

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Clear for Takeoff Virtual 5K

📍 Colorado Springs, CO•📅 Monday, Jul 20, 2026•1 events

3.1 Miles

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3.1 Miles

Starts 7/20/2026, 3:00:00 AM• Current price: $35

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Grand Mesa Ultras

📍 Grand Mesa, CO•📅 Saturday, Jul 25, 2026•1 events

50 Miler, 55K, 30K

Grand Mesa Ultras

📍 Grand Mesa, CO•📅 Saturday, Jul 25, 2026•1 events

55K

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55K

Starts 7/25/2026, 12:00:00 AM

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Aspen Valley Marathon

📍 Aspen, CO•📅 Saturday, Jul 25, 2026•2 events

13.1 Miles5K

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5K

Starts 7/25/2026, 9:30:00 AM• Current price: $55

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13.1 Miles

Starts 7/25/2026, 7:30:00 AM• Current price: $160

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2nd Annual Pancreatic Cancer Awareness in Honor of Diana Cantu - 5K Fun Run/Walk

📍 Alamosa, CO•📅 Saturday, Jul 25, 2026•2 events

3.1 Miles3.1 Miles

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3.1 Miles

Starts 7/25/2026, 8:00:00 AM• Current price: $18

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Durango Brewer's Trail Series

📍 Durango, CO•📅 Thursday, Jul 2, 2026•1 events

5K

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5K

Starts 7/30/2026, 6:00:00 PM• Current price: $30

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12th Annual Run for the Ring

📍 Aurora, CO•📅 Saturday, Aug 1, 2026•2 events

5K5K

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5K

Starts 8/1/2026, 8:00:00 AM• Current price: $37.5

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Sheep Mountain Trail Runs

📍 Fairplay, CO•📅 Saturday, Aug 1, 2026•1 events

53.1 Miles

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53.1 Miles

Starts 8/1/2026, 10:00:00 AM• Current price: $150

Register 53.1 Miles

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Flying Colors 5K Fun Run/Walk

📍 Craig, CO•📅 Saturday, Aug 1, 2026•1 events

5K

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5K

Starts 8/1/2026, 11:00:00 AM• Current price: $30

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Bound for Boston Marathon & Half Marathon - Denver

📍 Denver, CO•📅 Sunday, Aug 2, 2026•2 events

13.1 Miles13.1 Miles

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13.1 Miles

Starts 8/2/2026, 6:30:00 AM• Current price: $45

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Choice City Running Festival

📍 Fort Collins, CO•📅 Friday, Aug 7, 2026•3 events

BEST DEAL: Mountain Mile + 5K13.1 Miles5K

Register BEST DEAL: Mountain Mile + 5K

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BEST DEAL: Mountain Mile + 5K

Starts 8/7/2026, 5:00:00 PM• Current price: $40

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5K

Starts 8/8/2026, 7:30:00 AM• Current price: $25

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13.1 Miles

Starts 8/8/2026, 6:30:00 AM• Current price: $65

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Westminster Trail Races

📍 Westminster, CO•📅 Saturday, Aug 15, 2026•1 events

50K, 35K, Half Marathon, 10K, 5K

Westminster Trail Races

📍 Westminster, CO•📅 Saturday, Aug 15, 2026•2 events

5K35K

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35K

Starts 8/15/2026, 12:00:00 AM

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5K

Starts 8/15/2026, 12:00:00 AM

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

📍 Centennial, CO•📅 Saturday, Aug 15, 2026•4 events

13.1 Miles5K5K5K

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5K

Starts 8/15/2026, 7:30:00 AM• Current price: $37

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13.1 Miles

Starts 8/15/2026, 7:30:00 AM• Current price: $45

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Byers Peak Stampede Half Marathon & 5K Run

📍 Fraser, CO•📅 Saturday, Aug 22, 2026•1 events

13.1 Miles

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13.1 Miles

Starts 8/22/2026, 8:00:00 AM• Current price: $65

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2026 True Impact Ministries 5K/10K

📍 Centennial, CO•📅 Saturday, Aug 22, 2026•1 events

5K

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5K

Starts 8/22/2026, 8:00:00 AM• Current price: $39

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Staunton Rocks! Marathon and Half Marathon

📍 Pine, CO•📅 Saturday, Aug 22, 2026•1 events

13.1 Miles

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13.1 Miles

Starts 8/22/2026, 12:00:00 PM• Current price: $90

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Rock Hawk

📍 Castle Rock, CO•📅 Saturday, Aug 29, 2026•1 events

50K, 25K, 10K, 5K

RexRun For PAWSitivity 2026 Trail Run/Walk

📍 Aurora, CO•📅 Saturday, Aug 29, 2026•2 events

5K5K

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5K

Starts 8/29/2026, 12:00:00 PM• Current price: $45

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Golden Harvest Half Marathon & 5k/10k - Denver

📍 Westminster, CO•📅 Saturday, Sep 5, 2026•2 events

3.1 Miles13.1 Miles

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3.1 Miles

Starts 9/5/2026, 8:00:00 AM• Current price: $28

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13.1 Miles

Starts 9/5/2026, 8:00:00 AM• Current price: $48

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Break Your Neck: Walk, Run, or Roll

📍 Pueblo, CO•📅 Saturday, Sep 5, 2026•1 events

5K

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5K

Starts 9/5/2026, 12:30:00 PM• Current price: $0

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Golden Harvest Half Marathon & 5k/10k - Colorado Springs

📍 Colorado Springs, CO•📅 Sunday, Sep 6, 2026•2 events

3.1 Miles13.1 Miles

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3.1 Miles

Starts 9/6/2026, 8:00:00 AM• Current price: $28

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13.1 Miles

Starts 9/6/2026, 8:00:00 AM• Current price: $48

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Labor Day Half Marathon

📍 Parker, CO•📅 Monday, Sep 7, 2026•3 events

13.1 Miles13.1 Miles5K

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5K

Starts 9/7/2026, 8:00:00 AM• Current price: $27

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13.1 Miles

Starts 9/7/2026, 7:00:00 AM• Current price: $63

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Oak Creek No Fun Run

📍 Oak Creek, CO•📅 Monday, Sep 7, 2026•1 events

5K

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5K

Starts 9/7/2026, 1:00:00 PM• Current price: $25

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American Heroes Run

📍 Longmont, CO•📅 Friday, Sep 11, 2026•1 events

100 Miler, Marathon, 24 hrs, 1/2 Marathon, 9.11 Miler, 9 hrs & 11 min, 6 hour open start, 5K, Virt

American Heroes Run

📍 Longmont, CO•📅 Friday, Sep 11, 2026•1 events

5K

Quick registration

5K

Starts 9/11/2026, 12:00:00 AM