Think Big Trail Challenge

South Williamsport, United States • 5 Oct 2025

The Think Big Trail Challenge, held in South Williamsport, PA, offers 5K and 10K trail runs through scenic and historic terrain at the Williamsport Water Authority trails. The courses feature a mix of smooth singletrack, rugged climbs, and flowing descents. The 5K route includes gravel roads, forest trails, and the picturesque Bluebird Trail, while the 10K extends to the challenging Pocowanache Trail with steep ascents and stunning vistas. Runners enjoy natural beauty, rolling terrain, and historic sites, with an aid station at Green Bridge. Proceeds support the Think Big Pediatric Cancer Fund, making the event a meaningful community experience. Visit the organization's website for the most recent information.

Race information

10 km
10k
5 km
Visit the organization's website for the most recent information.
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