KingWood Ultras

About the Event

The KingWood Ultras returns to Frenchtown, New Jersey on September 11th through the 13th, offering a unique endurance challenge that blends scenic trail running with the comfort of an accessible base camp. This event takes place at Horseshoe Bend Park, located about three miles from downtown Frenchtown, and features a two-mile loop circuit that winds through forested areas and open fields. Runners will encounter small streams, quaint wooden bridges, and challenging terrain that includes roots and rocks.

50 Mile Kingwood 50 Mile
80.5K • Start: 07:00:00 • Fee: $175.00

100 Mile Kingwood100
160.9K • Start: 12:00:00 • Fee: $210.00

48Hr Kingwood48Hr
48 Hours • Start: 12:00:00 • Fee: $245.00

12Hr Kingwood12Hr
12 Hours • Start: 07:00:00 • Fee: $115.00

6Hr
6 Hours • Start: 07:00:00 • Fee: $85.00

10K Saturday
10K • Start: 10:00:00 • Fee: $45.00

24Hr Kingwood24Hr
24 Hours • Start: 12:00:00 • Fee: $220.00

Marathon
42.2K • Start: 12:00:00 • Fee: $85.00

10K Sunday
10K • Start: 13:00:00 • Fee: $45.00

On race morning in early September, runners can expect firm but slightly soft trail conditions underfoot with some sunlight filtering through the canopy of trees due to lower leaf coverage at this time of year. The UV index is expected to be moderate, indicating a need for sun protection during daylight hours. Temperatures typically hover between 65°F and 75°F (18°C - 24°C) in Frenchtown during early September mornings, making it comfortable yet cool enough for long-distance efforts.
KingWood Ultras has been running since its inception, drawing both novice trail runners looking to experience the unique loop format as well as seasoned ultramarathon enthusiasts seeking a manageable challenge. The event supports various local causes and scholarships each year through participant fees and donations. With multiple distances available across different days of the weekend, Kingwood offers something for every level of endurance runner.
The course is based at Horseshoe Bend Park near Frenchtown where runners will navigate a two-mile loop that includes woods, fields, wooden bridges over cool streams, providing scenic views around each lap while remaining close to Base Camp. Nighttime racing conditions are marked with glow sticks and reflective ribbons for clear visibility every quarter mile along the route.
For aid station support, KingWood Ultras features one central base camp location accessible after each two-mile loop run by all participants regardless of their distance choice. This setup ensures runners know exactly when they will hit their next checkpoint without worrying about remote logistics or unexpected detours during long events like 50 miles and beyond.
Participants can register for the KingWood Ultras via [https://ultrasignup.com/register.aspx?did=135749](https://ultrasignup.com/register.aspx?did=135749) with fees ranging from $85.00 for a 6-hour timed effort to $245.00 for the full two-day, 48-hour challenge. Bib pickup is available at Horseshoe Bend Park on September 9th and 10th between 10 am and 3 pm.
The start location of Flagg Kirkland Trail near Frenchtown welcomes runners of all ages starting from age 16 for most events, though some longer distances require minimum age requirements which are clearly listed during registration. Participants should arrive prepared with appropriate gear including trail shoes due to the quasi-technical nature of the course and adequate hydration supplies as refills occur every two miles.
KingWood Ultras in Frenchtown, New Jersey on September 11th through 13th offers a rare blend of scenic trail running challenges paired seamlessly with accessible aid stations making it an attractive option for both novice and seasoned runners alike.

Races Offered

50 Mile Kingwood

Sep 11, 2026

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Distance — 80.5K

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Type — Running

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07:00

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$175.00

100 Mile Kingwood

Sep 11, 2026

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Distance — 160.9K

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Type — Running

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12:00

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$210.00

48Hr Kingwood

Sep 11, 2026

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Distance — 48 Hours

terrain

Type — Running

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12:00

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$245.00

12Hr Kingwood

Sep 12, 2026

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Distance — 12 Hours

terrain

Type — Running

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07:00

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$115.00

6Hr

Sep 12, 2026

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Distance — 6 Hours

terrain

Type — Running

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07:00

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$85.00

10K Saturday

Sep 12, 2026

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Distance — 10K

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Type — Running

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10:00

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$45.00

24Hr Kingwood24Hr

Sep 12, 2026

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Distance — 24 Hours

terrain

Type — Running

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12:00

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$220.00

Marathon

Sep 12, 2026

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Distance — 42.2K

terrain

Type — Running

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12:00

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$85.00

10K Sunday

Sep 13, 2026

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Distance — 10K

terrain

Type — Running

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13:00

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$45.00

Weather History

These values represent the 3-year monthly averages for September in Frenchtown.

thermostat Temperature

14.7° / 24.3°

wb_sunny Feels like

13.8° / 23.6°

light_mode Avg sunshine hours

8h 45m

water_drop Avg rainfall

3.9 mm

ac_unit Avg snowfall

—

air Avg wind speed

9.4 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

74.4%

wb_twilight Sunrise

06:41

nightlight Sunset

19:07

About Frenchtown

Learn more about the host city, Frenchtown.

Frenchtown is a Borough in Hunterdon County. As of the United States 2010 Census, the borough population was 1,373. Various names have been applied to this settlement after the many ferry operators residing on both sides of the river. The community had variously been known as Alexandriaville, Sunbeam and Frenchtown over the years.