Earlier this week, Apple held an Activity Challenge exclusively in China to celebrate the country’s National Fitness Day and now they are holding The Grand Canyon National Park anniversary challenge.

On August 25, users can earn an award inspired by Grand Canyon National Park’s 100th anniversary. Record a walk, run, hike, or wheelchair workout of at least three miles (4.8KM) — the distance of the South Kaibab Trail to Cedar Ridge and back.

Apple usually has users to complete a set time workout but this time requires a specific workout with a specific distance. As usual Kyle Seth Gray on twitter discovered the workout ahead of time.