Welcome to the 2017 Cohasset Triathlon! We are humbled by the incredible support from the community, athletes, sponsors, and our phenomenal volunteers.
On Sunday, June 25, 2017 - take part in one of the largest race fields in the region. Online registration will open on Thursday, December 1st at 8:00 am.
Please join our mailing list to get the very latest updates and reminders about the opening of registration as this event historically sells out very quickly.
Brilliant aerial footage of the
2016 Cohasset Triathlon
We Are On The Radio
The Cohasset Tri is on the air - check out the 92.5FM "The River" commercial.