Race Details Event Date 05/25/23 Race start time(s) 5:30 PM Event Location Thompson Island, Boston Harbor Event Address 1 Long Wharf Event City Boston Event State MA Race ID 439 Event Information Registration URL https://runsignup.com/Race/MA/Boston/ThompsonIsland4kTrailRun Course Map Course map Website https://thompsonisland.org/support/fundraising-events/4k-trail-run/ Social Media Instagram USATF Cert. No. Uncertified Results Photo Links Finish line photos Live Results link http://www.iresultslive.com/?op=summary&eid=5621 Online Results Athlinks Older Results GSRS Results Archive2006, 2005, 2002 Recent Results 20252025202420242023202320222022202120212018201820172017201620162015 Race comments Race not held in 2020.