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Tarc Wapack and Back

Ashburnham, United States • 9 May 2026

Trail Animals Running Club's Wapack and Back takes place in Ashburnham, Massachusetts, along the Wapack Trail from Mount Watatic to North Pack Mountain in Greenfield, NH. Runners choose among 21.5-, 43-, and 50-mile ultramarathons. The course features rocky ledges, boulder fields, granite slabs, and single-track with roots, about 4,600 feet of elevation per direction (50-miler ~10,800 ft total).

Four aid stations provide water and Hyle Hydration; water stops are spaced up to 7.5 miles apart. The route is marked with yellow blazes; missteps require backtracking and GPS review. Start/finish check-ins at Mt Watatic; 21.5M uses Fitchburg Sportsmen's Club with shuttles.

Parking and weather precautions noted; camaraderie and trail stewardship. Visit the organization's website for the most recent information.

United States Massachusetts Ashburnham

Race information

Website
50 mi
10800 m+
50 Mile Ultramarathon
43 mi
43 Mile Ultramarathon
22 mi
4600 m+
21.5 Mile Trail Race
Visit the organization's website for the most recent information.
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