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Butler, PA, seen from above
April 2027 · date to be announced

Glacier Ridge Trail Ultramarathons and Trail Race

Butler, Pennsylvania · United States
RelayForest

Exceptional single-track trail through hilly hardwood forests

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Course

Trail races on the Glacier Ridge Trail through Moraine State Park, Pennsylvania. The shorter events run almost entirely on singletrack with short road sections at the start and finish; the 50 mile adds runnable but hilly double-track and fire road through hardwood forest. The 50 mile can also be run as a five-person relay.

50 miles50 mi
50K Ultramarathon50 km
20 Mile Trail Run20 mi

Key dates

Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.

About

The GRT will offer four events to provide participants a choice of distances to match their experience, early-season fitness, and season-long goals – the 20 Mile Trail Run, the 50K and 50 Mile Ultramarathons and the 50-Mile 5-person relay. Except for a short stretch at the start and near the end, the 20 Mile and 50K events will be entirely on an exceptional single-track trail. In addition to the single-track, the 50 Mile course also includes a section of very runnable, yet very hilly, double-track/fire roads through beautiful hardwood forests.

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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.