Sports
Boulderthon Marathon
Colorado's largest fall marathon featuring a downtown start and finish on Pearl Street Mall. This popular event attracts thousands of runners and offers excellent foot traffic for mobile coffee vendors.
- When
- Sep 27, 2026
- Where
- Boulder, CO
- Est. attendance
- 5000
- Organizer
- Boulderthon
About this event
Colorado's largest fall marathon featuring a downtown start and finish on Pearl Street Mall. This popular event attracts thousands of runners and offers excellent foot traffic for mobile coffee vendors.
View original listing on boulderthon.org →Track record & vendor details
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