Ironhike Endurance Series - Spring

Cornwall, United States • 4-7 Jun 2026

IronHike Series - Spring '26 (Mohawk Mountain, CT)

The IronHike Series - Spring '26 takes place in early June 2026 at Mohawk Mountain Ski Area, 46 Great Hollow Road, Cornwall, CT 06753. The event spans multiple days and offers timed endurance formats that run for fixed durations rather than fixed distances. Entries are available for individual competitors and for team formats described as Trail Buddy (teams of 2) and Trail Family (teams of 3 or 4).

Events, distances and format

  • Kuwohi - 15 miles | 7,140' elevation | 12-hour
  • Double Kuwohi - 28+ miles | 13,685' elevation | 24-hour
  • Denali - 43+ miles | 20,825' elevation | 48-hour
  • Everest - 61+ miles | 29,155' elevation | 72-hour
  • Olympus Mons Ultra - 152+ miles | 72,590' elevation | 84-hour
  • Answer the Bell Ultra (Basic) - 28.8 miles | 14,400' elevation | 24-hour
  • Answer the Bell Ultra (Full) - 100+ miles | 50,400' elevation | 84-hour

Events use a FlexRelay format in which participants self-manage pacing, rest, hydration and sleep. Some events require night trekking by headlamp. Organizers provide tenting space for the registrant and up to six spectators at no extra charge, a base-area support station, ski patrol medical support, parking and restrooms. Training plans, personalized bibs, summit tokens, finisher medals and hats are listed as included items. IronHike Endurance Productions LLC is a U.S. military veteran-owned business. Visit the organization's website for the most recent information.

Race information

152 mi
Olympus Mons Ultra - Powered by Skratch Labs ® - 152+ Miles | 72,590' Elevation | 84-Hour
100 mi
Answer the Bell Ultra - Full - 100+ Miles | 50,400' Elevation | 84-Hour
61 mi
Everest - 61+ Miles | 29,155' Elevation | 72-Hour
43 mi
Denali - 43+ Miles | 20,825' Elevation | 48-Hour
29 mi
Answer the Bell Ultra - Basic - 28.8 Miles | 14,400' Elevation | 24 Hour
28 mi
Double Kuwohi - 28+ Miles | 13,685' Elevation | 24-Hour
15 mi
Kuwohi - 15 Miles | 7,140' Elevation | 12-Hour
Answer the Bell Ultra - 1.2 Miles. 600 Feet. Every Hour. Until You Can No Longer Answer the Bell.
Visit the organization's website for the most recent information.
Trail runs nearby

Take on the Fall Fling 400 at YMCA Camp Sloper in Southington CT on Nov 22, 2025. Choose a unique 400 minute loop endurance challenge or a 4 mile two lap trail race through wooded single track and rolling hills.

Join the Roxbury Thanksgiving Charity Race, a scenic 5K in Roxbury, Connecticut, starting and finishing at Everett B. Hurlburt Community Park. Run or walk to celebrate the season and support local causes.

Run or walk this Thanksgiving on a scenic 5k trail around Scoville Reservoir in Wolcott with medals, swag and timed results. Enjoy pre race stretching and free post race yoga, family and dog friendly, with proceeds supporting EndoFound.

Challenge yourself at Penwood State Park in Bloomfield on April 18, 2026 with 17K and 50K loop options. Expect rugged, rocky single track, a notable power line climb, and classic grassroots trail race vibes.