Sports
Boulder Marathon and Half Marathon
Large marathon event in Boulder with multiple race distances including 5K and 10K, attracting thousands of runners needing pre- and post-race refreshments.
- When
- Sep 27, 2026
- Where
- Boulder, CO
- Est. attendance
- 8000
About this event
Large marathon event in Boulder with multiple race distances including 5K and 10K, attracting thousands of runners needing pre- and post-race refreshments.
View original listing on runnersworld.com →Track record & vendor details
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