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Triathlons in Connecticut

Connecticut has 23 upcoming triathlons scheduled for 2026. Marlborough is the busiest city with 6 races, ahead of Farmington (4) and Chester (2).

Showing all 23

Triathlon

Trumbull Kids Triathlon

Trumbull, CT

Triathlon

Trumbull Kids Triathlon

July 14, 2026
Trumbull, CT
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Lake Terramuggus Sprint Triathlon #3
Triathlon

Lake Terramuggus Sprint Triathlon #3

July 16, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #6

Farmignton, CT

Triathlon

Winding Trails Triathlon Series Race #6

July 16, 2026
Farmignton, CT
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Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

July 21, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #7

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #7

July 23, 2026
Farmington, CT
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Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

July 25, 2026
Chester, CT
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Triathlon

Winding Trails Triathlon Series Race #8

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #8

July 30, 2026
Farmington, CT
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Lake Terramuggus Sprint Triathlon #4
Triathlon

Lake Terramuggus Sprint Triathlon #4

July 30, 2026
Marlborough, CT
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Race4Chase Triathlon Program FINALE Race: Connecticut
Triathlon

Race4Chase Triathlon Program FINALE Race: Connecticut

August 1, 2026
Southington, CT
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Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

August 1, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #9

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #9

August 6, 2026
Farmington, CT
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Triathlon

Sharon Sprint Triathlon

Sharon, CT

Triathlon

Sharon Sprint Triathlon

August 8, 2026
Sharon, CT
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Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

August 8, 2026
Chester, CT
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East Haddam Sprint and Family Fun Triathlon
Triathlon

East Haddam Sprint and Family Fun Triathlon

August 8, 2026
Moodus, CT
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Triathlon

East Haddam Sprint and Family Fun Triathlon

Moodus, CT

Triathlon

East Haddam Sprint and Family Fun Triathlon

August 9, 2026
Moodus, CT
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Niantic Bay Triathlon
Triathlon

Niantic Bay Triathlon

August 9, 2026
Niantic, CT
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Lake Terramuggus Olympic Triathlon
Triathlon

Lake Terramuggus Olympic Triathlon

August 15, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #10

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #10

August 15, 2026
Farmington, CT
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Triathlon

Lake Terramuggus Olympic Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Olympic Triathlon

August 30, 2026
Marlborough, CT
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2026 Dave Parcells Madison Triathlon
Triathlon

2026 Dave Parcells Madison Triathlon

September 12, 2026
Madison, CT
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Triathlon

myTeam Triumph Westport Triathlon

Westport, CT

Triathlon

myTeam Triumph Westport Triathlon

September 13, 2026
Westport, CT
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Triathlon

20256 myTeam Triumph Westport Triathlon

Westport, CT

Triathlon

20256 myTeam Triumph Westport Triathlon

September 27, 2026
Westport, CT
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Litchfield Hills Triathlon
Triathlon

Litchfield Hills Triathlon

July 10, 2027
New Hartford, CT
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Top Cities for Triathlons in Connecticut

Marlborough (6)

Triathlons in Nearby States

MassachusettsNew YorkRhode Island

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.
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