Tarc Wapack and Back
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Event details
The TARC Wapack and Back takes place on Saturday, May 9, 2026 in Ashburnham, Massachusetts on the Wapack Trail. Distances offered:
- 21.5 mile
- 43 mile
- 50 mile
Entry fees are $60 for the 21.5 mile and $75 for the 43 and 50 mile distances. Online registration closes at the beginning of race week, there is no race-day registration, and the event has a no-refund policy. Youth entries (19 and under) receive a $10 discount. The race uses manual timing; comprehensive results are posted after the event.
Course and logistics
The out-and-back course runs roughly from Mt Watatic in Massachusetts to North Pack Mountain in New Hampshire. The trail is technical and rocky, with boulder fields, granite slabs, single track with rocks and roots, and steep ledges. Elevation is about 4,600 feet each direction and roughly 10,800 feet for the full 50 miles. The route affords long-range views to the east, west, and north.
Trail markings are yellow triangles on trees, rocks, and posts. Aid stations provide water and Hyle Hydration and will be spaced no more than about 7 miles apart; runners should plan to carry extra fluids and food. Headlamps are required for 43 and 50 mile participants. Drop bags are allowed for the longer distances and must be small and clearly labeled. Parking and check-in differ by distance: 43/50 check in at the DCR Mount Watatic trailhead (limited event parking), 21.5 mile participants check in at the Fitchburg Sportsmen's Club and are bused to the trail. Adaptive athletes may participate with specified accommodations and race director approval. Visit the organization's website for the most recent information.
