Nestled within the rugged terrain of the DWG area, the Mt. Tammany 10 presents an unparalleled challenge for seasoned ultrarunners seeking to test their limits on one of the most demanding courses around. Spanning nearly 40 miles, this grueling event features a relentless series of climbs and descents that will push even the toughest competitors to their absolute physical and mental extremes. The race begins at the Kittatinny Parking Lot Pavilion, where participants set off towards Dunnfield parking lot before ascending up the Red-Dot trail to reach the summit of Mt. Tammany. From there, runners transition onto a blue-blazed path for about half a mile until they make a sharp left turn and begin their descent down the mountain's steep trails. Crossing over a river at the bottom, competitors head back towards Dunnfield Parking Lot where they will start another ascent up Mt. Tammany. This arduous journey repeats itself ten times throughout the race, with each loop adding to the cumulative fatigue and testing runners' resilience against relentless elevation changes. Every second, fourth, sixth, eighth, and final tenth lap requires a return to the Start/Finish Pavilion for mandatory check-ins and loop verification, ensuring that no runner is left unaccounted for during this solitary yet communal endeavor. Throughout these loops, participants will be treated to breathtaking mountain vistas on their climbs and the soothing sounds of rushing water as they navigate through majestic waterfalls along the descent. However, with over 10,000 feet of elevation gain spread across ten hours, runners should brace themselves for a course that is unforgiving in its terrain and steeped in natural beauty. The Mt. Tammany 10 stands out not just as another tough race but as an experience where every step feels earned and each vista offers a momentary respite from the relentless challenge ahead. It's more than a test of endurance; it’s an invitation to immerse oneself fully into nature while pushing personal boundaries in one of the most satisfying ultramarathons runners can undertake. With no aid stations available at Dunnfield Parking Area, competitors must rely on their own preparation and support systems for this solitary yet communal journey. The Mt. Tammany 10 is not just a race; it's an odyssey through some of the toughest trails in the DWG area that only those who are truly prepared can undertake. For more information and to register, visit our official website where you'll find detailed course maps, check-in procedures, and all necessary details for this unforgettable ultramarathon experience.
Races Offered
40 Miler
Mar 20, 2027
straighten
Distance —
64.4K
terrain
Type —
Running
timer
05:45
sell
$150.00
Weather History
These values represent the 3-year monthly averages for March in Delaware Water Gap.
thermostatTemperature
0.0° / 11.2°
wb_sunnyFeels like
-4.4° / 6.8°
light_mode
Avg sunshine hours
8h 21m
water_drop
Avg rainfall
3.7 mm
ac_unit
Avg snowfall
0.2 cm
air
Avg wind speed
11.2 km/h (Light breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (4.0)
humidity_mid
Humidity
65.2%
wb_twilight
Sunrise
07:09
nightlight
Sunset
19:07
About Delaware Water Gap
Learn more about the host city, Delaware Water Gap.
The Delaware Water Gap is a water gap on the border between the U.S. states of New Jersey and Pennsylvania, southeast of Stroudsburg, where the Delaware River cuts through a large ridge of the Appalachian Mountains.