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Ironhike Endurance Series - Spring

Cornwall, United States • 5-8 Jun 2025

The IronHike Endurance Series - Spring 2025 takes place at Mohawk Mountain Ski Area in Cornwall, Connecticut. This multi-day endurance event spans from June 5 to June 8, offering a unique challenge that combines hiking and trail running over rugged terrain with significant elevation gains. Participants can compete solo, with a trail buddy, or as a trail family team of up to four.

Events range from a 12-hour, 15-mile Kuwohi to the grueling 84-hour, 152+ mile Olympus Mons Ultra, featuring up to 72,590 feet of elevation gain. The course includes day and night trekking, requiring headlamps for night sections. The event emphasizes self-managed pacing, hydration, and rest in a supportive mountain community atmosphere, with amenities like tenting, support stations, medical aid, and custom training plans.

It is a non-competitive personal challenge focused on endurance and transformation rather than racing. Visit the organization's website for the most recent information.

United States Connecticut Cornwall

Race information

Website
152 mi
72590 m+
Olympus Mons Ultra - 152+ Miles
61 mi
29155 m+
Everest - 61+ Miles
43 mi
20825 m+
Denali - 43+ Miles
28 mi
13685 m+
Double K - 28+ Miles
15 mi
7140 m+
Kuwohi - 15 Miles
Visit the organization's website for the most recent information.
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