Hill to Hollow 100km

Hill to Hollow 100km is held in Tully, New York, on September 19, 2026. The event is a single trail format: a 100K (62 miles) starting at 7:00 a.m. Tully sits in central New York's Finger Lakes region, and the name suggests a course moving between hills and hollows, which is typical of that terrain.

A 100K is a natural step between a 50-mile and a 100-mile, and it deserves a full ultra preparation: 18 to 20 weeks, with a weekly long trail run building toward 5 or 6 hours, back-to-back weekends in the final block, and regular hill work. With a 7:00 a.m. start, most runners will finish at or after dark, so plan a headlamp and practice a few evening runs. This distance suits runners who already have a 50K or 50-mile finish and want to see how they handle a longer day with a real fueling plan.