Marathons in Connecticut 2026 | Upcoming Races & Dates

There are 7 marathons in Connecticut scheduled for 2026. The next is the Ride with Hal in Westbrook on September 6. Connecticut marathons run primarily September through July.

Ride with Hal

Sun, Sep 6 · Westbrook, CT Westbrook

5 Mile Run15 Mile Bike Ride35 Mile Bike Ride

From $40 Closed

Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Solo - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day.

Fri, Oct 2 · Cornwall, CT Cornwall

Denali - 43+ Miles | 20,825' Elevation | 48-Hour

From $0 Closed

Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Relay - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day.

Fri, Oct 2 · Cornwall, CT Cornwall

Denali - 43+ Miles | 20,825' Elevation | 48-Hour

From $0 Closed

Iron Hike - Fall Double Kuwohi Trail Marathon Plus - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk

Sat, Oct 3 · Cornwall, CT Cornwall

Double Kuwohi - 28+ Miles | 13,685' Elevation | 24-Hour

From $0 Closed

Iron Hike - Fall Double Kuwohi Trail Marathon Plus Relay - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk

Sat, Oct 3 · Cornwall, CT Cornwall

Double Kuwohi - 28+ Miles | 13,685' Elevation | 24-Hour

From $0 Closed

Capalbo Strong Walk

Sun, Oct 4 · Fairfield, CT Fairfield

Capalbo Strong WalkCapalbo Strong Walk: 12 and UnderVirtual Walk +1

From $20 Open

Litchfield Hills Triathlon

Sat, Jul 10 · New Hartford, CT New Hartford

AquaBikeAquaBikeRELAY TEAM - Triathlon +3

From $89 Open

Marathons in Connecticut — 2026

Ride with Hal

Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Solo - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day.

Denali - 40 Mile + (40 Miler) - if you can only spare your whole weekend - Elevation Endurance Ultra Trail Marathon - 43 + Miles | 48 Hour - IronHike (Iron Hike) Fall (October / Oct) - Relay - Mohawk Mountain, Connecticut (CT) - Run, Hike or Walk with us as we redefine race day.

Iron Hike - Fall Double Kuwohi Trail Marathon Plus - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk

Iron Hike - Fall Double Kuwohi Trail Marathon Plus Relay - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk

Capalbo Strong Walk

Litchfield Hills Triathlon

Browse by City

All Connecticut Races