Kilkenny Ridge Race: A Journey Through Wild White Mountains Embark on an unforgettable adventure through the heart of New Hampshire's White Mountain National Forest with the Kilkenny Ridge Race. This challenging trail race offers runners two distance options, each providing a unique experience in one of the most remote and rugged landscapes in the Northeast. The 50-mile route begins at South Pond Recreation Area near Stark and traverses over to Jefferson before returning via the same path for a total elevation gain of approximately 15,000 feet. Along this journey, runners will ascend two iconic peaks — Mount Cabot and Mount Waumbek — as well as several lesser-known but equally spectacular summits such as The Bulge, The Horn, and Mount Starr King. For those seeking a slightly shorter yet no less thrilling experience, the 25-mile race starts at Jefferson Inn off Route 2. Participants will travel south along the Kilkenny Ridge Trail to South Pond Recreation Area, encountering over 7,000 feet of climbing en route. A third option is available in the form of a scenic 25K run from Berlin Fish Hatchery back to South Pond. All routes follow the well-maintained but unmarked Kilkenny Ridge Trail, requiring runners to rely on detailed maps and GPS tracks provided by race organizers during bib pickup at the start area. The remote nature of this course demands careful preparation; participants must bring their own hydration systems as no disposable cups will be supplied at aid stations. In addition to individual achievements, racers have an opportunity to compete for recognition within the White Mountain Endurance Cup series, which includes three other sub-ultra distance events across New Hampshire. Complete at least three of these races and earn a commemorative medal while vying for top male and female spots as King or Queen of the Mountains. Whether you're aiming for personal bests on rugged terrain or simply immersing yourself in nature's splendor, prepare to be captivated by this wild and wooly adventure. Bracing against unpredictable mountain weather with essential gear at hand, each step brings you closer not just to your goal but also to a profound connection with the untamed beauty of New Hampshire’s White Mountains. Join us for an unparalleled celebration of endurance and wilderness exploration on race day!
Races Offered
50 Miler
Sep 19, 2026
straighten
Distance —
80.5K
terrain
Type —
Running
timer
05:00
sell
$190.00
25 Miler
Sep 19, 2026
straighten
Distance —
40.2K
terrain
Type —
Running
timer
07:00
sell
$155.00
25K
Sep 19, 2026
straighten
Distance —
25K
terrain
Type —
Running
timer
08:00
sell
$125.00
Weather History
These values represent the 3-year monthly averages for September in Stark.
thermostatTemperature
11.0° / 21.5°
wb_sunnyFeels like
10.0° / 20.5°
light_mode
Avg sunshine hours
9h 27m
water_drop
Avg rainfall
2.2 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
6.9 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
78.5%
wb_twilight
Sunrise
06:25
nightlight
Sunset
18:55
About Stark
Learn more about the host city, Stark.
Stark is a village in the Great North Region of New Hampshire.