The Signature Mountains are the five core, vertical-goal endurance events that form the heart of the series. They represent the equivalent elevation gain (and loss) of some of the world's most epic peaks: Kuwohi, Double Kuwohi, Denali, Everest, and Olympus Mons.

Our main endurance events are typically held at Mohawk Mountain Ski Area in Cornwall, Connecticut, USA, which provides a concentrated, pure up-and-down vertical course profile.

The registration fee varies based on the specific event length and capacity. The overall total price range is typically $200 (for the shortest events) up to $2,000 (for the longest individual ultra events). FlexRelay options (Trail Buddy and Trail Family) are the most economical choice per mountain athlete. The cost per mountain athlete, per day ranges from approximately $140 (for a multi-day FlexRelay team) up to $600 (for a shorter individual event), demonstrating the significant savings realized by participating as a team in longer events.

The Kuwohi event covers approximately 15 miles, achieves 7,140 feet of elevation gain and loss, and has a 12-hour cut-off time.

The Double Kuwohi event covers 28+ miles (approx. 28.75), achieves 13,685 feet of elevation gain and loss, and has a 24-hour cut-off time.

The Denali event covers 43+ miles (approx. 43.75), achieves 20,825 feet of elevation gain and loss, and has a 48-hour cut-off time.

The Everest event covers 61+ miles (approx. 61.25), achieves 29,155 feet of elevation gain and loss, and has a 72-hour cut-off time.

The Olympus Mons Ultra event covers 152+ miles, achieves a staggering 72,590 feet of elevation gain and loss, and has an 84-hour cut-off time.

The Answer the Bell Ultra (Full) covers 100+ miles, achieves over 50,400 feet of elevation gain and loss, and runs for a maximum of 84 hours.

The Answer the Bell Ultra (Basic) covers 28.8 miles, achieves 14,400 feet of elevation gain and loss, and is a 24-hour endurance event.