Endurance Events in Cornwall, CT
Cornwall, CT hosts 13+ upcoming endurance events across Connecticut. The local race calendar includes trail running, running and more. Whether you are training for your first 5K or preparing for a marathon, RACE helps you find every event in the Cornwall area with dates, courses, and registration links.
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Trail Running (12)Running (1)
Upcoming Events in Cornwall
Trail Running
Iron Hike - Fall Answer the Bell Ultra Trail Marathon - Full (Backyard Ultra Format) - 100+ Miles | 50,400' Elevation | 84-Hour | Run, Hike or Walk
October 1, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Olympus Mons Ultra Trail Marathon Relay - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk
October 1, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Olympus Mons Ultra Trail Marathon - powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk
October 1, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Everest / 29029 Everesting Ultra Trail Marathon Relay - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk
October 1, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Everest / 29029 Everesting Ultra Trail Marathon - 61+ Miles | 29,029'+ Elevation | 72-Hour | Run, Hike or Walk
October 1, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Denali Ultra Trail Marathon - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk
October 2, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Denali Ultra Trail Marathon Relay - 43+ Miles | 20,825' Elevation | 48-Hour | Run, Hike or Walk
October 2, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Double Kuwohi Trail Marathon Plus Relay - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk
October 3, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Double Kuwohi Trail Marathon Plus - 28+ Miles | 13,685' Elevation | 24-Hour | Run, Hike or Walk
October 3, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Kuwohi Trail Half Marathon Plus Relay - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk
October 3, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Kuwohi Trail Half Marathon Plus - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk
October 3, 2026
Cornwall, CT
Trail Running
Iron Hike - Fall Answer the Bell Ultra Trail Marathon - Basic (Backyard Ultra Format) - 28+ Miles | 14,400'+ Elevation | 24-Hour | Run, Hike or Walk
October 3, 2026
Cornwall, CT
