Upcoming Marathons in Connecticut

Endurance Grid lists two marathons in Connecticut, from October to November 2026 across 2 cities.

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October 2026 Connecticut Running Races

1 upcoming Marathon in Connecticut in October.

Races happening soon in Connecticut

Endurance races in Connecticut happening in the next 7 days, in date order. Browse what’s coming up and sign up soon.

Oct

Sat

RunningTrail Running

Tackle the Trail (TM)

Airline Trail, Northeast, CT

10K · Half Marathon · Marathon

Avg 61° / 38°

November 2026 Connecticut Running Races

1 upcoming Marathon in Connecticut in November.

Nov

Sat

Running

Roxbury Fall Classic

18 Apple Ln, Roxbury, CT

Half Marathon · Marathon · 50K

Avg 51° / 34°·538 ft city elevation

Avg 51° / 34°538 ft city elevation

Running races in Connecticut

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All Connecticut Running Races

Frequently Asked Questions

How many marathons are in Connecticut?

Endurance Grid's Race Calendar lists 2 upcoming marathons in Connecticut, in 2 cities, from October to November 2026.

How long is a marathon?

A marathon is a running race where athletes run 26.2 miles long (42.2 kilometers) for time.

Which Connecticut cities host marathons?

Marathons in Connecticut are held in Northeast and Roxbury.

What other race distances are available in Connecticut?

Beyond marathon, Connecticut races cover a wide range of distances. Connecticut also has 5Ks, 10Ks, and half marathons for running races. Additionally, Endurance Grid's Race Calendar also covers other sports, with aquabike, road cycling, duathlon, paddle, running, trail running, triathlon, and ultra races of various distances.