The 2009 race field is over 70% full. We highly encourage you sign up now to get in the race. We also recommend racers sign up for our Marlborough race - race day July 26th — this race will provide a great tuneup for the Gloucester race.

The Gloucester Triathlon is proud to announce two new partners for our race this year. Avia, the leader in endurance sports racing footwear, has become the Official Footwear partner of the Commonwealth Triathlon Series.

The Manchester Athletic Club (MAC) is now the Official Training Center of the race. Click here to find out more information about the MAC.

The Commonwealth Triathlon Series is attracting top talent in the region.

Click here to see who is on board!

Stay connected with other racers!
Click here.