Arc'teryx Run Boston

Run or walk a 5k on the Southern New England Trunkline Trail in Franklin. This event supports the development of an abandoned rail bed into a multi use path connecting local communities.

Celebrate the eighth annual Trillium Spring 5K in Canton or participate virtually from anywhere. Join over 500 runners at the brewery to support Girls on the Run Greater Boston with races for adults and children.

A 5K Fun Run at Strongwater Farm in Tewksbury on May 17, 2026 to raise funds for programs supporting people with mobility challenges. The trail course crosses corn fields and woods, with a shorter accessible route and family activities on s..

A 4K race on Cathleen Stone Island in Boston Harbor with round trip ferry transport, chip timing, and a post-race dinner and beer. Proceeds support free hands-on science education for Boston youth and teams or individuals choose a day.