Big Climb Philly

Experience a historic multi day track event at Cooper River Park featuring timed challenges from 6 hours to 144 hours. Pursue personal records and national team goals with full on site support and catered meals.

A trail half and full marathon through Wissahickon Valley Park on April 11, 2026, with mostly single-track terrain, aid stations every 3 to 4 miles, an eight hour limit for the marathon, finisher medals and a post-race pizza party.

Event Overview The 8th Annual Earth Day Trail Run is held at the Pennypack Ecological Restoration Trust in Huntingdon Valley, Pennsylvania. All proceeds from the event benefit the trust's efforts to protect open space and maintain its over..

Course and Format The event is a 50-kilometer (31-mile) race along the Schuylkill River Trail. It starts and finishes at Saint Michael's Park, which adjoins Lock 60 in Mont Clare, Pennsylvania, adjacent to Phoenixville. The course follows t..