The MT. TAMMANY 10

Confront one of the Northeast's most brutal and iconic challenges at The MT. TAMMANY 10 in the Delaware Water Gap on Saturday, March 21, 2026. This formidable ultra demands that runners complete ten consecutive loops of the Mount Tammany ascent, totaling nearly 40 miles with over 10,000 feet of gain, all within a strict 10-hour time limit. The relentless course follows the Red-Dot trail to the summit, descends via the Blue-Blaze trail past waterfalls, and returns via the Appalachian Trail, testing even the most seasoned ultrarunners with its rugged, rocky terrain.
This is a true test of mental fortitude and physical resilience, offering no personal records but immense satisfaction for those who endure. With check-ins required at the Kittatinny pavilion after every second loop and basic aid in the Dunnfield lot, the event is a pure, unadorned challenge. Prepare for a day of grinding climbs, majestic views, and the profound accomplishment that comes from mastering "The 10, 10, in 10" on one of the toughest trails in the region.