The VOID
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About the race
The Void is a 48-hour out-and-back endurance event held inside the abandoned Sideling Hill Tunnel near Valley-Hi, PA. Runners traverse a 1.3-mile corridor back and forth for 63 out-and-backs, totaling just under 160 miles of continuous pavement. The course has no interior lighting, so participants proceed by headlamp and face repeated periods of darkness and isolation.
The event emphasizes individual endurance and self-management rather than direct competition. A physical Toll Ticket system controls how often a runner may exit the tunnel to access support; each entrant receives a physical ticket at check-in and must plan support stops accordingly. The Toll Ticket system is intended to add a strategic and disciplinary element to the effort.
Entry requires an application that race directors review. Priority is given to applicants with demonstrated extreme endurance experience. The organizers recommend prior completion of at least one 100-mile ultramarathon, backyard ultra, FKT, or comparable extreme endurance event within three years of registration. The field is limited to 96 participants. The event is organized by ESTEA and takes place within the Sideling Hill Tunnel, a section of the Old Turnpike Trail that is described as cold, dark, and silent. Visit the organization's website for the most recent information.
