4 triathlon, running, swimming, and other events in Cohasset, Massachusetts

From big races to Saturday morning group runs—find triathlon, running, swimming, road, and walking events and connect with the local endurance sports community.

• Cohasset Road Race by the Sea 2026 50th Anniversary [cohassetrotary.org] [Register at raceroster.com]
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  Sun, Apr 12, 2026 at 1:00 PM

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  Cohasset Road Race by the Sea 10K

  Run + Walk

  April 12, 2026

  50th Anniversary

  In loving memory of Wayne Sawchuk

  2026 SPONSORSHIPS NOW OPEN

  Lorraine.Tarpey@raveis.com

  For 50 years, Cohasset Road Race...

  Cohasset Road Race by the Sea 10K

  Run + Walk

  April 12, 2026

  50th Anniversary

  In loving memory of Wayne Sawchuk

  2026 SPONSORSHIPS NOW OPEN

  Lorraine.Tarpey@raveis.com

  For 50 years, Cohasset Road Race by the Sea, presented by Cohasset Rotary Club, has been a spring running tradition. Our scenic yet challenging course begins and ends beside the quintessential Cohasset Town Common. The route includes the Atlantic coastline with views of both Boston and Minot Lighthouses. Minot will cheer you with its famous blinks 1-4-3 ("I love you").

  This race is Cohasset Rotary Club’s signature fundraiser. Through net proceeds and the generosity of our sponsors, we continue to “raise money to give it away” - to local charities - and global initiatives done in conjunction with Rotary International.

  Race weekend is our favorite weekend of the year!

  This year marks the 50th anniversary of the legendary run. We are so pleased to partner with Safe Harbor Cohasset Coalition, who will orchestrate the walk portion of the event. If you're not a runner, we invite you to register for the walk, beginning at 10 a.m., and support the important work of the Coalition.

  Check out the many volunteer opportunities! We'd love to see you!

  Thank you for your support of Cohasset Rotary Club.

  We raise money to give it away.

  We hope to see old and new friends on Race Day 2026!

  We are enormously grateful for each and every registration.

  Please note that we do not issue refunds for Cohasset Road Race by the Sea.

  If you are unable to participate your registration fee will be a donation to the

  Cohasset Rotary Club and the charities we support.

  10k Road Run Walk

  Robert E Jason Road, Cohasset, Massachusetts, 02025, United States
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• Cohasset Masters Swim Team [cohassetswimcenter.com] [Register at runsignup.com]
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  Mon, Jun 15, 2026 at 6:00 AM

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  WHAT:

  Start your day with purpose and energy at our beautiful 6-lane, 25-yard outdoor pool. Whether you're new to Masters swimming or a former collegiate athlete, every workout is designed to...

  WHAT:

  Start your day with purpose and energy at our beautiful 6-lane, 25-yard outdoor pool. Whether you're new to Masters swimming or a former collegiate athlete, every workout is designed to challenge and support you. Come swim with a great group of people and get stronger in the water!

  WHEN:

  June through September

  Every Tuesday & Thursday morning

  6:00 AM – 7:15 AM

  WHO IT’S FOR:

  Swimmers age 18 and up who can swim 100 yards freestyle (4 lengths) in 1:50 or faster.

  WHAT TO EXPECT:

  Each practice includes a warm-up followed by two to three sets focused on building fitness, speed, and endurance. Most workouts average around 3,000 yards.

  COACH BILL BURNETT:

  Bill became Head Coach of the Masters Team in 2022, taking over from longtime coach and team founder Jim Zotz. Under Bill’s leadership, the team has grown, consistently filling all 45+ spots each summer. Bill is a DIII All-American swimmer from Ohio Wesleyan University, owner of Goldfish Swim School in Rockland, and Founder of the Cohasset Triathlon.

  COST:

  Full Season (28 practices): $250

  Half Season (14 practices): $175

  QUESTIONS?

  Email Coach Bill at bill@streamlineevents.com

  Swim Triathlon

  89 Sohier Street, Cohasset, Massachusetts, 02025, United States
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• Cohasset Triathlon [cohassettri.com] [Register at runsignup.com]
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  Sun, Jun 28, 2026 at 7:45 AM

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  KICK OFF THE SUMMER WITH 1,000+ ATHLETES IN THIS SENSATIONAL EVENT!

  Triathlon

  345 Atlantic Avenue, Cohasset, Massachusetts, 02025, United States
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• Cohasset Kids Triathlon [streamlineevents.com] [Register at runsignup.com]
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  Sat, Aug 01, 2026 at 8:45 AM

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  Every child is a winner in this race! Our goal is to create a fun, relaxed, and inspiring experience for kids ages 6 to 14.

  The race begins at the Cohasset Swim Center, offering easy access with...

  Every child is a winner in this race! Our goal is to create a fun, relaxed, and inspiring experience for kids ages 6 to 14.

  The race begins at the Cohasset Swim Center, offering easy access with convenient parking nearby. The swim portion takes place in a fantastic 25-yard outdoor pool. The bike and run segments are held on Sohier Road, a two-lane route fully closed to vehicle traffic.

  CATEGORIES:

  • 8 & UNDERS (Swim 2 lengths of the pool, Bike 1.4 miles, Run 1/2 mile)

  • 9-10 YEAR OLDS (Swim 4 lengths of the pool, Bike 1.4 miles, Run 1 mile)

  • 11-12 YEAR OLDS (Swim 6 lengths of the pool, Bike 1.4 miles, Run 1 mile)

  SPACE IS LIMITED T0 250 KIDS

  For all of the details about this race, please go to this page https://www.streamlineevents.com/kids-tri-cohasset

  Kids Run Swim Triathlon

  89 Sohier Street, Cohasset, Massachusetts, 02025, United States
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