The next Apple Watch Activity Challenge will take place August 25
(iMore iPhone)

What you need to know The next Apple Watch Activity Challenge will take place on August 25. Apple selected the date in celebration of the Grand Canyon National Park`s 100th anniversary. Apple Watch owners can walk, run, hike, or wheelchair at least three miles (or 4.8 kilometers) to complete the challenge. The same day the Grand Canyon National Park celebrates its 100th anniversary. Apple`s next Apple Watch Activity Challenge will take place on August 25. That isn`t just a random date, Apple selected it in honor of the Grand Canyon National Park`s 100th anniversary. First spotted by Kyle Seth Gray on Twitter, the challenge sets a distance for activity fiends to embark on. Here`s how this particular challenge breaks down: On August 25, 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. The three-mile dis...