The Keystone Trails Association (KTA) 100-Mile Trail Challenge recognizes hikers who complete 100 miles or more of eligible Pennsylvania hiking trails between September 1, 2015, and August 31, 2016. Participants are challenged not just to complete 100 or more miles of trails but to secure sponsorships for each mile of their journey (at least $1 per mile hiked). Each dollar raised will support hiking trails throughout Pennsylvania. Click here to learn more.