RACE Logo
Sign In

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
Details →
Cohasset Triathlon
Triathlon

Cohasset Triathlon

June 28, 2026
Cohasset, MA
Details →

Triathlon

2026 Whaling City Triathlon & Duathlon

New Bedford, MA

Triathlon

2026 Whaling City Triathlon & Duathlon

June 28, 2026
New Bedford, MA
Details →

Triathlon

2026 Cohasset Triathlon

Cohasset, MA

Triathlon

2026 Cohasset Triathlon

June 28, 2026
Cohasset, MA
Details →
Falmouth Sprint Triathlon
Triathlon

Falmouth Sprint Triathlon

July 12, 2026
Falmouth, MA
Details →

Triathlon

DAM Sprint Tri & Duathlon

Amesbury, MA

Triathlon

DAM Sprint Tri & Duathlon

July 12, 2026
Amesbury, MA
Details →

Triathlon

2026 Falmouth Sprint Triathlon

Falmouth, MA

Triathlon

2026 Falmouth Sprint Triathlon

July 12, 2026
Falmouth, MA
Details →
Falmouth Sprint Triathlon
Triathlon

Falmouth Sprint Triathlon

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

DAM SPRINT TRIATHLON + DUATHLON

July 12, 2026
Amesbury, MA
Details →

Triathlon

Appleman Triathlon/Aquabike

Littleton, MA

Triathlon

Appleman Triathlon/Aquabike

July 18, 2026
Littleton, MA
Details →
Nantucket Triathlon
Triathlon

Nantucket Triathlon

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

APPLEMAN TRIATHLON/DUATHLON/AQUABIKE CHARITY RACE

July 19, 2026
Littleton, MA
Details →

Triathlon

2026 Nantucket Triathlon

Nantucket, MA

Triathlon

2026 Nantucket Triathlon

July 19, 2026
Nantucket, MA
Details →
Mattapoisett Lions Triathlon
Triathlon

Mattapoisett Lions Triathlon

July 26, 2026
Mattapoisett, MA
Details →
Cohasset Kids Triathlon
Triathlon

Cohasset Kids Triathlon

August 1, 2026
Cohasset, MA
Details →

Triathlon

Mattapoisett Lions Triathlon

Mattapoisett, MA

Triathlon

Mattapoisett Lions Triathlon

August 1, 2026
Mattapoisett, MA
Details →

Triathlon

2026 Gloucester Sprint Triathlon

Gloucester, MA

Triathlon

2026 Gloucester Sprint Triathlon

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

42nd Annual Greenfield Triathlon

August 2, 2026
Greenfield, MA
Details →
The Sharon Triathlon
Triathlon

The Sharon Triathlon

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

Kingsbury Club Summer Youth Triathlon

August 23, 2026
Medfield, MA
Details →

Triathlon

2026 Boston Triathlon

Boston, MA

Triathlon

2026 Boston Triathlon

August 23, 2026
Boston, MA
Details →

Triathlon

Kingsbury Club Youth Triathlon

Medfield, MA

Triathlon

Kingsbury Club Youth Triathlon

September 5, 2026
Medfield, MA
Details →
Hyannis 2 Triathlon
Triathlon

Hyannis 2 Triathlon

September 12, 2026
Centerville, MA
Details →

Triathlon

2026 Hyannis 2 Triathlon

Craigville, MA

Triathlon

2026 Hyannis 2 Triathlon

September 12, 2026
Craigville, MA
Details →

Triathlons in Nearby States

ConnecticutNew HampshireNew YorkRhode IslandVermont

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.
← All TriathlonsAll events in MassachusettsBrowse all 22,000+ events