Get ready for an incredible 84-hour challenge covering 152+ miles through Cornwall, CT with over 72,590 feet of elevation gain—and you can tackle it however you like, whether that's running, hiking, or walking. This Skratch Labs-powered event is brought to you by IronHike Endurance Productions LLC, a US military veteran-owned company dedicated to creating tough endurance experiences. Head to the registration site to see current pricing and claim your spot in this epic Spring Olympus Mons Ultra Trail Marathon adventure.