Running Races in Cornwall, Connecticut 2026 | Browse All Races | My Next Race

There are 23 running races in Cornwall, Connecticut in 2026. The next is the Iron Hike - Spring Olympus Mons Ultra Trail Marathon Relay - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk on June 4. Distances include ultras, marathons, half marathons.

Iron Hike - Spring Everest / 29029 Everesting Ultra Trail Marathon - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk

Thu, Jun 4 · Cornwall, CT Cornwall

Ultra Everest Ultra - 61+ Miles | 29,155' Elevation | 72-Hour

From $0 Closed

Iron Hike - Spring Olympus Mons Ultra Trail Marathon Relay - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk

Thu, Jun 4 · Cornwall, CT Cornwall

Ultra Olympus Mons Ultra - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour

From $0 Closed

Iron Hike - Spring Olympus Mons Ultra Trail Marathon - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk

Thu, Jun 4 · Cornwall, CT Cornwall

Ultra Olympus Mons Ultra - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour

From $0 Closed

Iron Hike - Spring Everest / 29029 Everesting Ultra Trail Marathon Relay - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk

Thu, Jun 4 · Cornwall, CT Cornwall

Ultra Everest Ultra - 61+ Miles | 29,155' Elevation | 72-Hour

From $0 Closed

Iron Hike - Spring Denali Ultra Trail Marathon - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk

Fri, Jun 5 · Cornwall, CT Cornwall

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

From $0 Closed

Iron Hike - Spring Denali Ultra Trail Marathon Relay - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk

Fri, Jun 5 · Cornwall, CT Cornwall

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

From $0 Closed

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

Sat, Jun 6 · Cornwall, CT Cornwall

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

From $0 Closed

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

Sat, Jun 6 · Cornwall, CT Cornwall

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

From $0 Closed

Iron Hike - Spring Kuwohi Trail Half Marathon Plus - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk

Sat, Jun 6 · Cornwall, CT Cornwall

Road Kuwohi - 15 Miles | 7,140' Elevation | 12-Hour

From $0 Closed

Iron Hike - Spring Kuwohi Trail Half Marathon Plus Relay - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk

Sat, Jun 6 · Cornwall, CT Cornwall

Road Kuwohi - 15 Miles | 7,140' Elevation | 12-Hour

From $0 Closed

Iron Hike - Fall Olympus Mons Ultra Trail Marathon - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk

Thu, Oct 1 · Cornwall, CT Cornwall

Ultra Olympus Mons Ultra - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour

From $0 Closed

Iron Hike - Fall Everest / 29029 Everesting Ultra Trail Marathon - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk

Thu, Oct 1 · Cornwall, CT Cornwall

Ultra Everest Ultra - 61+ Miles | 29,155' Elevation | 72-Hour

From $0 Closed

Iron Hike - Fall Answer the Bell Ultra Trail Marathon - Full (Backyard Ultra Format) - 100+ Miles | 50,400' Elevation | 84-Hour | Run, Hike or Walk

Thu, Oct 1 · Cornwall, CT Cornwall

Ultra Answer the Bell Ultra - Full - 100+ Miles | 50,400' Elevation | 84-Hour

From $0 Closed

Iron Hike - Fall Olympus Mons Ultra Trail Marathon Relay - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk

Thu, Oct 1 · Cornwall, CT Cornwall

Ultra Olympus Mons Ultra - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour

From $0 Closed

Iron Hike - Fall Everest / 29029 Everesting Ultra Trail Marathon Relay - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk

Thu, Oct 1 · Cornwall, CT Cornwall

Ultra Everest Ultra - 61+ Miles | 29,155' Elevation | 72-Hour

From $0 Closed

Iron Hike - Fall Denali Ultra Trail Marathon - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk

Fri, Oct 2 · Cornwall, CT Cornwall

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

From $0 Closed

Iron Hike - Fall Denali Ultra Trail Marathon Relay - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk

Fri, Oct 2 · Cornwall, CT Cornwall

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

From $0 Closed

Iron Hike - Fall Kuwohi Trail Half Marathon Plus Relay - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk

Sat, Oct 3 · Cornwall, CT Cornwall

Road Kuwohi - 15 Miles | 7,140' Elevation | 12-Hour

From $0 Closed

Iron Hike - Fall Answer the Bell Ultra Trail Marathon - Basic (Backyard Ultra Format) - 28+ Miles | 14,400'+ Elevation | 24-Hour | Run, Hike or Walk

Sat, Oct 3 · Cornwall, CT Cornwall

Ultra Answer the Bell Ultra - Basic - 28.8 Miles | 14,400' 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

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

From $0 Closed

Iron Hike - Fall Kuwohi Trail Half Marathon Plus - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk

Sat, Oct 3 · Cornwall, CT Cornwall

Road Kuwohi - 15 Miles | 7,140' Elevation | 12-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

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

From $0 Closed

The Little Guild 12th Annual Run & Wag 5K

Sat, Oct 17 · Cornwall, CT Cornwall

Road Run & Wag 5k

From $35 Open