The Rez Loop Challenge is a 12-hour endurance event where participants aim to complete the Ross Barnett Reservoir loop multiple times. Starting and finishing at the RunStrong Training Center, the unmarked course includes asphalt paths, roads, and sidewalks with varying terrain. There is no on-course support, but refreshments and recovery areas are provided. Participants can compete solo or in relay teams of up to three. Mandatory participation requirements include carrying hydration gear. Due to high temperatures, personal safety is emphasized, with communication tools required. Completion of at least one loop earns participants a t-shirt and finisher's medal.