Course Description

The content that follows was originally published on the Boston Triathlon website at


In 2016, we are thrilled to announce that the Boston Triathlon will finally join the other major urban triathlons in the US as an OLYMPIC DISTANCE RACE! The start and finish will still be at DCR Carson Beach & Mother’s Rest Fields, but the course will be extended to accommodate the additional distance. Please note that we are working closely with the City of Boston and DCR to establish the final route, which will be announced as soon as possible. We still have a sprint distance option!

Register early, because this event WILL SELL OUT in 2016.

A point-to-point course in Dorchester Bay that begins on the beach near the McCormack Bathhouse and follows a trapezoidal course the finish on the beach near the Bayside Expo Center. Wetsuits are recommended. Athletes should plan to walk approximately 1/4 mile along DCR Carson Beach to the Swim Start. The walk is mostly on trails and sand, so shoes are not needed.

In the event of poor swim conditions, Race Management and the Department of Conservation and Recreation reserve the right to shorten, alter or eliminate the swim course.

Final wave assignments and start times will be finalized and posted in Spring 2016.

The Transition Area
The Transition Area will be located in the grassy field, referred to as DCR Mother’s Rest. It will be a flow-through design, where athletes enter at one end and exit at the other. Athletes will be assigned a rack space that allows plenty of room for gear. The Transition Area will be secure and monitored, and only athletes, volunteers, and staff will be allowed inside. Athletes can retrieve their gear once all of the bikes have returned from the course.

The course is a looped course on a number of wide, car-free roads, including DCR Day Blvd.

The entire bike course will be closed to vehicular traffic and managed by city police and State Troopers. There may be pedestrians that try to cross the road at unauthorized locations, so please be alert and aware of this potential situation, especially in the middle part of the course (near L Street).

Bike traffic will be two-way and will utilize all of DCR Day Blvd. All vehicles will be removed from the course prior to the start of the race.

Drafting is not allowed in this triathlon, and there will be officials on course monitoring cyclists. Any athlete caught drafting will be subject to time penalties. DCR Day Blvd is wide enough to allow for safe passing on the left. Athletes must stay as far to the right as possible while on the bike unless they are overtaking another competitor.

The course is a point-to-point route that follows DCR Day Blvd to the Sugar Bowl, then goes part way around the Pleasure Bay Path before turning around and returning along DCR Day Blvd. Runners will continue on an out-and-back past TA along the Harbor Trail to UMass. The finish is back at DCR Mother’s Rest Field.

There will be water/aid stations approximately every 1.5 miles with water and electrolyte replacement drink.

Please note – the road closure is permitted by DCR and the State Police and is allowed only for a specific time. If an athlete falls far behind the rest of the field during the run and risks delaying the opening of the roadway, he or she will be required to move onto the sidewalk to complete the race.