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Triathlons in Connecticut

Connecticut has 41 upcoming triathlons scheduled for 2026. Two months carry most of the calendar: July (17) and August (11) together account for 68% of races (28 of 41). Marlborough is the busiest city with 10 races, ahead of Farmington (7) and Chester (5).

Triathlons by month in Connecticut

Jul (17) · Aug (11) · Jun (10) · Sep (3)

Showing 24 of 41

Triathlon

Winding Trails Triathlon Series Race #1

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #1

June 14, 2026
Farmington, CT
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Triathlon

2026 Mini of Fairfield County Seaside Triathlon and Duathlon

Bridgeport, CT

Triathlon

2026 Mini of Fairfield County Seaside Triathlon and Duathlon

June 14, 2026
Bridgeport, CT
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Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

June 14, 2026
Chester, CT
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Lake Terramuggus Sprint Triathlon #1
Triathlon

Lake Terramuggus Sprint Triathlon #1

June 18, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #2

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #2

June 18, 2026
Farmington, CT
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Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

June 20, 2026
Marlborough, CT
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Pat Griskus Olympic, Du, Sprint Triathlon
Triathlon

Pat Griskus Olympic, Du, Sprint Triathlon

June 20, 2026
Middlebury, CT
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Triathlon

Pat Griskus Olympic Triathlon/Sprint Triathlon/ Olympic Duathlon

Middblebury, CT

Triathlon

Pat Griskus Olympic Triathlon/Sprint Triathlon/ Olympic Duathlon

June 23, 2026
Middblebury, CT
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Triathlon

Winding Trails Triathlon Series Race #3

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #3

June 25, 2026
Farmington, CT
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Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

June 27, 2026
Chester, CT
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Lake Terramuggus Sprint Triathlon #2
Triathlon

Lake Terramuggus Sprint Triathlon #2

July 2, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #4

Farmignton, CT

Triathlon

Winding Trails Triathlon Series Race #4

July 2, 2026
Farmignton, CT
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Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

July 7, 2026
Marlborough, CT
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Triathlon

Winding Trails Triathlon Series Race #5

Farmignton, CT

Triathlon

Winding Trails Triathlon Series Race #5

July 9, 2026
Farmignton, CT
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Litchfield Hills Triathlon
Triathlon

Litchfield Hills Triathlon

July 11, 2026
New Hartford, CT
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Triathlon

15th Hopkins Vineyard Triathlon 2026

New Preston, CT

Triathlon

15th Hopkins Vineyard Triathlon 2026

July 11, 2026
New Preston, CT
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Triathlon

14th Hopkins Vineyard Triathlon

Warren, CT

Triathlon

14th Hopkins Vineyard Triathlon

July 11, 2026
Warren, CT
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Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

July 11, 2026
Chester, CT
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Triathlon

2026 Litchfield Hills Triathlon

New Hartford, CT

Triathlon

2026 Litchfield Hills Triathlon

July 11, 2026
New Hartford, CT
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Triathlon

Trumbull Kids Triathlon

Trumbull, CT

Triathlon

Trumbull Kids Triathlon

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

Lake Terramuggus Sprint Triathlon #3

July 16, 2026
Marlborough, 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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Top Cities for Triathlons in Connecticut

Marlborough (10)Farmington (7)Chester (5)

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