Events

September 28, 2025

Boulderthon

6:30 am

-

11:00 am

Downtown Boulder

Event Details

September 28, 2025

Boulderthon

Named among the Best Fall Marathons by Runner's World, #5 Best Half Marathon in the US by Active, as well as #1 Best in Colorado and one of ...

Event Details

6:30 am

-

11:00 am

Downtown Boulder

Register for Boulderthon Here!

October 25, 2025

Monster Dash

9:30 am

-

12:00 pm

Sloans Lake, Denver

Event Details

October 25, 2025

Monster Dash

We welcome the 500 Runners to the return of the Denver Race for 2025. One of Denver's best places to run with great views of the mountains...

Event Details

9:30 am

-

12:00 pm

Sloans Lake, Denver

Register for Monster Dash Here!

November 15, 2025

Pumpkin Pie 5k & 10K

9:00 am

-

12:00 pm

City Park, Denver

Event Details

November 15, 2025

Pumpkin Pie 5k & 10K

Join us for a holiday tradition! The Pumpkin Pie 5K/10K is a flat and fast 5K and 10K held at City Park in Denver, Colorado. Start your holi...

Event Details

9:00 am

-

12:00 pm

City Park, Denver

Register for Pumpkin Pie 5k Here!

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