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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

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

Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

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

Lake Terramuggus Sprint Triathlon #1

June 18, 2026
Marlborough, CT

Triathlon

Winding Trails Triathlon Series Race #2

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #2

June 18, 2026
Farmington, CT

Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

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

Pat Griskus Olympic, Du, Sprint Triathlon

June 20, 2026
Middlebury, CT

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

Triathlon

Winding Trails Triathlon Series Race #3

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #3

June 25, 2026
Farmington, CT

Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

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

Lake Terramuggus Sprint Triathlon #2

July 2, 2026
Marlborough, CT

Triathlon

Winding Trails Triathlon Series Race #4

Farmignton, CT

Triathlon

Winding Trails Triathlon Series Race #4

July 2, 2026
Farmignton, CT

Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

July 7, 2026
Marlborough, CT

Triathlon

Winding Trails Triathlon Series Race #5

Farmignton, CT

Triathlon

Winding Trails Triathlon Series Race #5

July 9, 2026
Farmignton, CT
Litchfield Hills Triathlon
Triathlon

Litchfield Hills Triathlon

July 11, 2026
New Hartford, CT

Triathlon

15th Hopkins Vineyard Triathlon 2026

New Preston, CT

Triathlon

15th Hopkins Vineyard Triathlon 2026

July 11, 2026
New Preston, CT

Triathlon

14th Hopkins Vineyard Triathlon

Warren, CT

Triathlon

14th Hopkins Vineyard Triathlon

July 11, 2026
Warren, CT

Triathlon

Cedar Lake Triathlon

Chester, CT

Triathlon

Cedar Lake Triathlon

July 11, 2026
Chester, CT

Triathlon

2026 Litchfield Hills Triathlon

New Hartford, CT

Triathlon

2026 Litchfield Hills Triathlon

July 11, 2026
New Hartford, CT

Triathlon

Trumbull Kids Triathlon

Trumbull, CT

Triathlon

Trumbull Kids Triathlon

July 14, 2026
Trumbull, CT

Triathlon

Winding Trails Triathlon Series Race #6

Farmignton, CT

Triathlon

Winding Trails Triathlon Series Race #6

July 16, 2026
Farmignton, CT
Lake Terramuggus Sprint Triathlon #3
Triathlon

Lake Terramuggus Sprint Triathlon #3

July 16, 2026
Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

Marlborough, CT

Triathlon

Lake Terramuggus Sprint Triathlon

July 21, 2026
Marlborough, CT

Triathlon

Winding Trails Triathlon Series Race #7

Farmington, CT

Triathlon

Winding Trails Triathlon Series Race #7

July 23, 2026
Farmington, CT

Top Cities for Triathlons in Connecticut

Triathlons in Nearby States

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.