Rules

Every runner must complete a loop of 6.706 km (4.167 miles) within one hour.

At the top of every hour, runners must be in the start corral and begin the next loop at the bell. A whistle will sound 3, 2, and 1 minute before each start.

Runners must continue completing loops as long as they can return to the start line within 60 minutes.

Any remaining time before the next bell is the runner’s rest time — there is no extra pause.

Runners may not leave the course until they finish the loop, except for emergency restroom breaks.

Support, pacing, or assistance is only allowed between loops at the race base — never during a loop.

Trekking poles and similar aids are not permitted.

Slower runners must allow faster runners to pass safely.

A headlamp is required between 21:00 and 06:00 for safety.

Any runner caught littering will be disqualified (DNF).

The race continues until only one runner completes a loop and starts the next one alone. That runner is the winner.