Iconic tradition · Boulder, CO
BOLDERBoulder 10K is a landmark running tradition in Boulder, Colorado, with a verified date of May 31, 2027.
ConfirmedFamily friendlyCostumes encouraged
- When
- Mon, May 31, 2027
Start 6:45 AM (first citizen wave)
Memorial Day - Where
- Start 30th & Walnut; finish Folsom Field, University of Colorado
Boulder, CO · Boulder
Directions - Entry
- Register
- Organized by
- BOLDERBoulder
Since 1979
What to expect
2026 Season completed
Monday, May 25, 2026
- Mon, May 25, 2026
2027 Confirmed
Monday, May 31, 2027
- Mon, May 31, 2027
Checked Sun, Oct 4, 2026 against the official source.
About the run
A Memorial Day 10K through Boulder run in about 96 citizen waves past bands, belly dancers on 'Belly Dance Hill' at Folsom and Valmont, and backyard slip-n-slides, followed by a pro team race and a Memorial Day tribute inside Folsom Field.
The run
- Distances
- 10K
- Occasion
- Memorial Day
- Season
- Spring
- Field
- 53,801 registered; 47,645 finishers (2026)
Nearby
Sources
- Official site official
- Registration official
- 2026 recap with 2027 date official
- Race day schedule official
- Course entertainment (belly dancers, slip-n-slide, bacon) official
- 2026 Belly Dance Hill performers research
Details checked against the race’s own pages on Sun, Oct 4, 2026.