Jeff Calvert is a Pennsylvania native and Penn State graduate now living in State College, PA.  He recently retired from the Army after 30 years of service, and now focuses on running, writing, and service to the trailrunning community. He is co-founder of the Worlds End Ultras, Operations Coordinator for Eastern States 100, and co-founder of the Eastern States Trail-Endurance Alliance.  He’s run 60 trail races, including 39 ultras. Eastern States 2015 was the first of his 9 hundred-milers. Jeff writes about "trailrunning and other adventures in distance and wonderment" on his Substack, The Rush of it All.

Benjamin J. Mazur has been very active in the "Rocksylvania" running community. Nine years ago, Benjamin was a founding member and now serves as current president of Allegheny Trailrunners, Inc. - a 501c3, all-volunteer not-for-profit, that organizes a series of trail races as an advocate for trail development throughout the Alleghenies. Benjamin has directed almost two dozen trail events including Rock 'N The Knob, Dirty Kiln, and the new Ironstone 100K, and also served as co-director, volunteer coordinator and/or as logistical support for Worlds End, Eastern States and Black Forest ultramarathons. If he is not working at those races, you can find him volunteering, or cheering on at dozens of other trail events, or at a brewpub or tavern enjoying an IPA. He now serves as race director for Ironstone 100K and Eastern States 100.

Thad Will’s trail running roots started with the Nittany Valley Hash House Harriers, a social running club in the State College area that values the recuperative effect of beer to the body and soul of its members. As such, it was only a natural transition for Thad to the central PA trail running community in 2009. Thad completed his first ultra at Hyner in 2014. Since then he’s completed multiple ultras at  every distance up to 100 miles, including Worlds End, Laurel Highlands, Massanutten, and Eastern States. Thad lives in State College with his understanding wife Ellen, and boys Jacob and Nate. 

Sean Robbins is a graduate of Villanova University and the Pennsylvania State University Dickinson School of Law.  He is an attorney with the Governor’s Office of General Counsel at the Pennsylvania Department of Environmental Protection where he has practiced law since 2000.  Sean currently serves on the boards of the Delaware and Lehigh National Heritage Corridor, the Luzerne County Transportation Authority and is the President of the Anthracite Scenic Trails Association.  In his free time, he likes to be outdoors and enjoys running, skiing, hiking, climbing, cycling and competing in triathlons. Sean currently resides in Dallas, Pennsylvania.

Originally an avid equestrian, Cassandra Lizza gradually turned in her riding boots for running shoes as she discovered the sport of trail running. With a love of rugged, tough, and remote trail events, she found herself drawn to the Pennsylvania Wilds region. She ran her first ultra at the inaugural Hyner Trail Challenge 50K and has since completed multiple ultra events around the region—including Eastern States and the PA Triple Crown in 2016. She has participated in Eastern States every year that it was officially held since its inception, starting with crew and pacer to volunteer. A New Jersey native who now calls Lancaster City home, Cassandra can often be found exploring trails in Michaux, Tuscarora, and Bald Eagle State Forests.