R U N N I NRunning races in Boulder
There are 4 upcoming running races in Boulder: 3 short races and 1 trail & ultra races. The next one is Girls on the Run Rockies Boulderthon SoleMates 2026 on 27. september 2026. The list is sorted by date, updated weekly, and each race links straight to the organiser's official registration.
Upcoming races
| Race | Type | Date |
|---|---|---|
| Girls on the Run Rockies Boulderthon SoleMates 2026 | short races | 27. september 2026 |
| Alpine Bank Boulder Thanksgiving Day 5K | short races | 26. november 2026 |
| Hands & Voices New Year Virtual 5K: Trails to the Summit | trail & ultra races | 31. december 2026 |
| Bolder Boulder | short races | maj 2027 |
Frequently asked questions
How many races are there in Boulder?
Runnin currently lists 4 upcoming running races in Boulder across all distances. The calendar refreshes weekly.
How do I register?
Every race on the list links directly to the organiser's official registration page. Runnin is free and sells nothing.