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Triathlons in Massachusetts

Massachusetts has 29 upcoming triathlons scheduled for 2026. Most of the calendar falls in the warmer months: 28 of 29 races (97%) take place between May and September, with July (10 events) the busiest month. No single city dominates the calendar. Cohasset leads with 3 races, followed by Falmouth (3), Centerville (2), and Amesbury (2). The remaining 66% of the calendar is spread across smaller cities.

Triathlons by month in Massachusetts

Jul (10) · Aug (7) · Sep (7) · Jun (4) · Oct (1)

Showing 24 of 29

Triathlon

Hyannis 1 Triathlon

Centerville, MA

Triathlon

Hyannis 1 Triathlon

June 14, 2026
Centerville, MA
Cohasset Triathlon
Triathlon

Cohasset Triathlon

June 28, 2026
Cohasset, MA

Triathlon

2026 Whaling City Triathlon & Duathlon

New Bedford, MA

Triathlon

2026 Whaling City Triathlon & Duathlon

June 28, 2026
New Bedford, MA

Triathlon

2026 Cohasset Triathlon

Cohasset, MA

Triathlon

2026 Cohasset Triathlon

June 28, 2026
Cohasset, MA
Falmouth Sprint Triathlon
Triathlon

Falmouth Sprint Triathlon

July 12, 2026
Falmouth, MA

Triathlon

DAM Sprint Tri & Duathlon

Amesbury, MA

Triathlon

DAM Sprint Tri & Duathlon

July 12, 2026
Amesbury, MA

Triathlon

2026 Falmouth Sprint Triathlon

Falmouth, MA

Triathlon

2026 Falmouth Sprint Triathlon

July 12, 2026
Falmouth, MA
Falmouth Sprint Triathlon
Triathlon

Falmouth Sprint Triathlon

July 12, 2026
Falmouth, MA
DAM SPRINT TRIATHLON + DUATHLON
Triathlon

DAM SPRINT TRIATHLON + DUATHLON

July 12, 2026
Amesbury, MA

Triathlon

Appleman Triathlon/Aquabike

Littleton, MA

Triathlon

Appleman Triathlon/Aquabike

July 18, 2026
Littleton, MA
Nantucket Triathlon
Triathlon

Nantucket Triathlon

July 18, 2026
Nantucket, MA
APPLEMAN TRIATHLON/DUATHLON/AQUABIKE CHARITY RACE
Triathlon

APPLEMAN TRIATHLON/DUATHLON/AQUABIKE CHARITY RACE

July 19, 2026
Littleton, MA

Triathlon

2026 Nantucket Triathlon

Nantucket, MA

Triathlon

2026 Nantucket Triathlon

July 19, 2026
Nantucket, MA
Mattapoisett Lions Triathlon
Triathlon

Mattapoisett Lions Triathlon

July 26, 2026
Mattapoisett, MA
Cohasset Kids Triathlon
Triathlon

Cohasset Kids Triathlon

August 1, 2026
Cohasset, MA

Triathlon

Mattapoisett Lions Triathlon

Mattapoisett, MA

Triathlon

Mattapoisett Lions Triathlon

August 1, 2026
Mattapoisett, MA

Triathlon

2026 Gloucester Sprint Triathlon

Gloucester, MA

Triathlon

2026 Gloucester Sprint Triathlon

August 2, 2026
Gloucester, MA
42nd Annual Greenfield Triathlon
Triathlon

42nd Annual Greenfield Triathlon

August 2, 2026
Greenfield, MA
The Sharon Triathlon
Triathlon

The Sharon Triathlon

August 9, 2026
Sharon, MA
Kingsbury Club Summer Youth Triathlon
Triathlon

Kingsbury Club Summer Youth Triathlon

August 23, 2026
Medfield, MA

Triathlon

2026 Boston Triathlon

Boston, MA

Triathlon

2026 Boston Triathlon

August 23, 2026
Boston, MA

Triathlon

Kingsbury Club Youth Triathlon

Medfield, MA

Triathlon

Kingsbury Club Youth Triathlon

September 5, 2026
Medfield, MA
Hyannis 2 Triathlon
Triathlon

Hyannis 2 Triathlon

September 12, 2026
Centerville, MA

Triathlon

2026 Hyannis 2 Triathlon

Craigville, MA

Triathlon

2026 Hyannis 2 Triathlon

September 12, 2026
Craigville, MA

Frequently asked questions

What are the standard triathlon distances?
The main distances are Sprint (750m swim, 20K bike, 5K run), Olympic (1.5K swim, 40K bike, 10K run), Half-Ironman/70.3 (1.2mi swim, 56mi bike, 13.1mi run), and full Ironman (2.4mi swim, 112mi bike, 26.2mi run). Browse all distances on RACE.
What do I need for my first triathlon?
At minimum you need a swimsuit, goggles, a road or tri bike, helmet, running shoes, and a race belt for your number. Many beginners start with a sprint triathlon, which can be completed in 1-2 hours.
What is the difference between sprint and Olympic triathlon?
A sprint triathlon is roughly half the distance of an Olympic triathlon. Sprints typically take 1-1.5 hours while Olympic distance races take 2-3.5 hours. Sprints are ideal for beginners.
How do I qualify for the IRONMAN World Championship?
Athletes qualify by earning a slot at an IRONMAN-branded qualifying race. Each full IRONMAN event allocates slots to age group winners. The World Championship is held annually in Kailua-Kona, Hawaii.
What are the biggest triathlons in the US?
The SuperTri Chicago Triathlon is the largest single triathlon event with 8,000+ athletes. IRONMAN events in Texas, Florida, Lake Placid, and Arizona draw thousands. Escape From Alcatraz is a bucket-list race. Find them all on RACE.