2025 Boston Triathlon

Save

Feature

Claim

1, Boston MA

Sunday, August 17th, 2025

🏊‍♂️ Race Overview

Join us this summer for one of the most exciting races of the year. With a one-of-a-kind course that includes beaches, paths, and well-paved closed roads – all in the City of Boston!

📅 Event Details

Date: 2025-08-17
Time: 1 PM
Location: Boston, MA
Registration: Sign up here

Course Map

Suggested Races

14th Annual FBRTC 5K Road Race

Franklin, MA

Saturday, May 17th, 2025

View details for race 14th Annual FBRTC 5K Road Race

South Shore "3 Beach Minimum" Half Marathon 2025

Hull, MA

Saturday, September 27th, 2025

Half

View details for race South Shore "3 Beach Minimum" Half Marathon 2025

30th Annual Run to the Rock

Marshfield, MA

Saturday, September 6th, 2025

Marathon

10K

View details for race 30th Annual Run to the Rock

15th Annual Hanover Day 5K

Hanover, MA

Saturday, June 28th, 2025

View details for race 15th Annual Hanover Day 5K

10th Annual Run for Recovery 5K

Boston, MA

Sunday, May 18th, 2025

View details for race 10th Annual Run for Recovery 5K

13th Annual Set the Pace 5K & 1 Mile Walk

Hingham, MA

Saturday, April 26th, 2025

View details for race 13th Annual Set the Pace 5K & 1 Mile Walk

Strong as a Mother 5K Run and Walk

Chelmsford, MA

Sunday, May 11th, 2025

View details for race Strong as a Mother 5K Run and Walk

Run. Walk. United for Mental Health. West Acton...

Acton, MA

Saturday, May 10th, 2025

1 Mile

View details for race Run. Walk. United for Mental Health. West Acton 5K & Fun Run

Healthy Kids Running Series Spring 2025 - Acton...

Acton, MA

Sunday, June 1st, 2025

View details for race Healthy Kids Running Series Spring 2025 - Acton, MA

STEP UP FOR COLLEEN 5K WALK/RUN

Andover, MA

Sunday, May 4th, 2025

View details for race STEP UP FOR COLLEEN 5K WALK/RUN

Arlington Education Foundation 5K

Arlington, MA

Sunday, May 18th, 2025

View details for race Arlington Education Foundation 5K

2025 AFCEA Run/Walk For STEM 5K

Bedford, MA

Saturday, September 27th, 2025

View details for race 2025 AFCEA Run/Walk For STEM 5K

Bedford Day 5K

Bedford, MA

Saturday, September 20th, 2025

View details for race Bedford Day 5K

2024 Belmont AAPI Run 5K & 2K Race

Belmont, MA

Sunday, May 4th, 2025

View details for race 2024 Belmont AAPI Run 5K & 2K Race

Fall Frolic 5K & Fun Run

Beverly, MA

Sunday, October 12th, 2025

1 Mile

View details for race Fall Frolic 5K & Fun Run

Boston 10K for Women

Boston, MA

Saturday, October 11th, 2025

10K

View details for race Boston 10K for Women

Boston Marine Corps Honor Run

Boston, MA

Saturday, May 10th, 2025

View details for race Boston Marine Corps Honor Run

Boston River Run

Boston, MA

Sunday, November 9th, 2025

View details for race Boston River Run

Road of Rainbows Pride 5K

Boston, MA

Saturday, June 14th, 2025

View details for race Road of Rainbows Pride 5K

Colin's Joy Project 5K

Boston, MA

Saturday, September 27th, 2025

View details for race Colin's Joy Project 5K

2025 Boston Triathlon

Save

Feature

Claim

1, Boston MA

Sunday, August 17th, 2025

🏊‍♂️ Race Overview

Join us this summer for one of the most exciting races of the year. With a one-of-a-kind course that includes beaches, paths, and well-paved closed roads – all in the City of Boston!