The Mt. Tammany 10
Blairstown, United States • 21 Mar 2026
Event overview
The MT. TAMMANY 10 is scheduled for March 21, 2026 in the Delaware Water Gap, New Jersey area. The event is an almost 40.0 mile trail run organized as ten repeated loops of Mount Tammany. The course includes ten climbs and more than 10,000 feet of total elevation gain. The organizer notes the route is technically demanding and warns that falls, bruises, strains and cuts are possible.
Course and logistics
The Start/Finish is at the Kittatinny Parking Lot Pavilion. Each loop runs from the pavilion to the Dunnfield parking lot, then up the Red-Dot trail to the summit of Mount Tammany. Runners follow the blue-blaze trail for about 0.5 miles to a left turn, descend Mount Tammany, cross the river, and use the Appalachian Trail for about 0.33 miles back to the Dunnfield parking lot. This sequence repeats for ten loops. Runners must return to the Start/Finish Pavilion for check-in and loop verification at the end of the 2nd, 4th, 6th, 8th and 10th loops. Aid will be posted in the Dunnfield Parking Area. Registration closes on Wed, Mar 18. Visit the organization's website for the most recent information.