Head to Tucson for this multi-distance event featuring 5K, 10K, and half marathon options, all starting at 8:00 AM with packet pickup available from 7:30-7:50 AM. The 5K and 10K share an out-and-back course with the 5K runners completing it once and 10K runners twice, while the half marathon follows its own out-and-back route four times. Be sure to register in advance on RunSignup, as on-site registration isn't available, and note that all runners must finish within 3 hours and 30 minutes.