This summer endurance event in Lincoln Park brings together Orca Running and Evergreen Trail Runs for an exciting loopy experience that combines the best of both organizations. You'll run a 2-mile loop as many times as possible during your choice of time periods—3, 6, 12, or 18 hours—with all runners crossing the finish line together at 10:00pm for a celebratory finish line party. New for 2026, you can register as part of a run club team of 2-5 members, with the top 3 teams earning special finishers plaques based on total loops completed.