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Thompson Island Outward Bound 4K Trail Run/Walk

Starts Wednesday September 22nd, 2021

Boston, MA

Official Website


The Thompson Island Outward Bound 4K Trail Run is the most unique race in Boston. It takes place on Thompson Island in the Boston Harbor and offers a great opportunity for companies to enjoy a team building activity with their employees, while also supporting the programs Thompson Island Outward Bound Education Center offers to Boston’s youth. This year we will be holding both a fully virtual and a smaller in-person event for all our sponsors. 

In its second year of virtual format, the 4K Trail Run, will offer runners access to more than 20 unique 4k runs around Boston, virtual bibs and finisher certificates, and opportunity to submit photos and times for fun prizes! Our in-person 4K Trail Run is returning to Thompson Island, and a limited number of spots will be offered to our team sponsors, secure your sponsorship today at thompsonisland.org/4KTrailRun

Virtual Trail Run - Sept 22nd - Sept 29th
On Island Trail Run - Sept 29th and Sept 30th

Race Distances

Price Register
On Island Thursday 4K Trail Run Click to Find Out Register »
On Island Wednesday 4K Trail Run Click to Find Out Register »
Virtual Runner Click to Find Out Register »

Places to Stay

Get Directions

Start Location

Thompson Island Outward Bound, Boston, MA

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