Marathons in Connecticut, United States
27 upcoming races are listed in Connecticut, including 14 marathons, 19 half marathons and 13 ultras. The next is Hogsback Half Marathon on September 26, 2026.
October has the most races. Race pages link the official source where we have one. Confirm dates and prices with the organizer before you register.
27
Races listed
14
Marathons
October
Busiest month
25 May
Last updated
| Date | Race | City | Distances |
|---|---|---|---|
| 18 Apr 2027 18Apr 27 | Stamford Run Club 5k/10k/Half Marathon | Stamford | 21.1K · 10K · 5K |
| 25 Apr 2027 25Apr 27 | Jack Bristol Lake Waramaug Ultra Races | Kent | 100K · 50 Miler · 50K |
| 1 May 2027 01May 27 | Woodstock CT Marathon | Woodstock | 42.2K |
Go a level deeper
Links go down the map, not sideways. Each region and city has its own page of races.
Cities
Common questions
When is the next race in Connecticut?
Hogsback Half Marathon on September 26, 2026. The table above lists every upcoming race in date order.
Which months are busiest in Connecticut?
October (15), November (5), April (3), counting every upcoming race listed in Connecticut.
Which distances can I run in Connecticut?
The listed races include 14 marathons, 19 half marathons, 13 ultras, 6 10Ks and 8 5Ks. Many events offer more than one distance on the same day.
How do I confirm a race’s details?
Open the race page and check its provenance ledger, which shows where each fact came from. Then confirm the date, price and entry rules with the organizer before you register or book travel.
Spotted something wrong on this page?
Dates and prices move · tell us and we check the organizer’s source