Head to the pavilion by the playground to start this ninja-themed running event in Sapulpa, OK, where you can choose between a 5K, 10K, or half marathon—all featuring out-and-back loops on the same 0.78-mile course (with the 5K running it twice, the 10K four times, and the half marathon six times). Registration is required on RunSignup with no day-of sign-ups available, packet pickup opens 30 minutes before the 8:00 AM start and closes 10 minutes before the race begins, and keep in mind that entry fees go up on the Monday before race day. You'll have 3 hours and 30 minutes to complete your chosen distance.