4K Trail Run
MAY
20-21
2026
Run a unique 4 km trail race on Cathleen Stone Island in Boston Harbor. The event includes a ferry ride to the island and concludes with a post-run party. Proceeds support free science education for Boston youth.
20-21 May 2026
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Event Details
The 4K Trail Run takes place on Cathleen Stone Island in Boston Harbor. The island is accessed by a ferry ride of approximately 30 minutes.
Distances
- 4 km trail run
Event Structure
The event is held on two separate days, with options for both individual runners and teams. The run is followed by dinner, beer, and a party on the island.
Purpose
All funds raised from the event support Cathleen Stone Island's mission to provide free, hands-on science learning for youth in Boston. Visit the organization's website for the most recent information.
4k Trail Run
