IronHike Endurance Series

IronHike Endurance Series brings a mountain-style challenge to Mohawk Mountain Ski Area in Cornwall, Connecticut. The Fall 2025 edition runs across October 2–5 and offers six self-paced events ranging from 12 to 84 hours. Core distances include Olympus Mons Ultra (152+ miles, about 72,590 ft of elevation) and Everest (61+ miles, 29,155 ft), plus Denali (43+ miles, 20,825 ft) and shorter routes like Kuwohi (15 miles, 7,140 ft) and Double Kuwohi (28+ miles, 13,685 ft).

Participants can compete solo, with a trail buddy, or as a trail family, using FlexRelay pacing. The format emphasizes personal endurance, tents and spectator areas, ski-patrol safety, and a community journey rather than podiums or records. Visit the organization's website for the most recent information.