Head to Bettendorf, IA for the Ninja 5K, 10K, and 13.1M—featuring three different distance options with varying out-and-back loop configurations (the 5K completes one loop, the 10K does two, and the half marathon covers four loops). The race kicks off at 8:30 AM with packet pickup available from 8:00-8:20 AM, and you'll need to register ahead of time on RunSignup since on-site registration isn't available. Park at 2016 Parkway Dr in Bettendorf, and keep in mind there's a 3 hour 30 minute time limit for all participants.