Hill to Hollow 100km

SEP
19
2026
A roughly 100 km trail ultramarathon around Morgan Hill State Forest with about 10,286 ft of elevation and seven aid stations. The route follows mostly single track and requires offline navigation and self-sufficiency.
Sat 19 Sep 2026
100 kilometers

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Hill to Hollow 100km

Hill to Hollow 100km is a trail ultramarathon held in the Morgan Hill State Forest area near Tully, NY. The roughly 100 km course covers about 63.7 miles and includes approximately 10,286 feet of elevation change. The route crosses four counties and follows mostly single-track trails, including long stretches of the Onondaga Trail and sections of the North Country Trail and Finger Lakes Trail. The course passes ponds, waterfalls, high viewpoints including the highest point in Onondaga County, Highland Forest County Park, DeRuyter Reservoir, Muller Hill State Forest, and Chippewa Falls before returning to Morgan Hill State Forest. Camping is available in Morgan Hill State Forest.

Distances

  • 100 km Solo
  • 100 km Relay

There are seven staffed aid stations (not including start and finish). Typical aid station items include water, Skratch, ice when appropriate, fruit, savory snacks, sweets, and a limited selection of hot foods at Aid Station 7. Pacers are allowed for solo 100 km runners after about mile 33 and pacer or relay exchanges are permitted only at aid stations. Crew access is possible though some road conditions may be rough.

The event emphasizes self-sufficiency and navigation without reliable 5G or LTE coverage. Required gear includes an offline-capable navigation device with the course file, a headlamp with extra batteries, reflective vest, emergency blanket, waterproof shell with hood, water filtration, at least 800 mL of liquid capacity, and a 400 kcal food reserve. A 20 hour hard cutoff applies. The race runs concurrently with Morgan Hill Trail Races half marathon and marathon and is a UTMB Index race. Visit the organization's website for the most recent information.

100 km
100km Solo
100 km
100km Relay
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