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Ultra Marathons Found In Connecticut in October

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Ultra Marathons in Connecticut in October 2025

Find A Race is the US's favourite event listings site. Check out our list of October 2025 Ultra Marathons in Connecticut below.

Race Calendar: Ultra Marathons Found In October

πŸš€Boosted

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

Cornwall, Connecticut
02 Oct 25 - 05 Oct 25
Free
πŸš€Boosted

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

Cornwall, Connecticut
04 Oct 25 - 05 Oct 25
Free
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Iron Hike - Fall Olympus Mons Ultra Trail Marathon - powered by Skratch Labs - 152+ Miles | 72,590' Elevation | 84-Hour | Run, Hike or Walk

Cornwall, Connecticut
02 Oct 25 - 05 Oct 25
Free

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

Cornwall, Connecticut
02 Oct 25 - 05 Oct 25
Free

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

Cornwall, Connecticut
02 Oct 25 - 05 Oct 25
Free

IronHike Endurance Series - Fall 2025 - Mohawk Mtn, CT, USA

Cornwall, Connecticut
02 Oct 25 - 05 Oct 25
$200.00 - $2,000.00

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

Cornwall, Connecticut
02 Oct 25 - 05 Oct 25
Free

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

Cornwall, Connecticut
03 Oct 25 - 05 Oct 25
Free

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

Cornwall, Connecticut
03 Oct 25 - 05 Oct 25
Free

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

Cornwall, Connecticut
04 Oct 25 - 05 Oct 25
Free

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

Cornwall, Connecticut
04 Oct 25 - 05 Oct 25
Free

Chase's 20th Birthday Challenge: 200 miles in 10 months!

Newtown, Connecticut
01 Jan 25 - 31 Oct 25
$38.10
Showing 1-10 of 10 results