Napa Wilderness Trail Runs

MAY
15
2027
Experience the rugged beauty of Skyline Wilderness Park with trail races ranging from a 10K to a demanding 50K ultra marathon featuring expansive Napa Valley views.
Sat 15 May 2027
52 kilometers 18 miles 14 miles 6 miles

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Napa Wilderness Trail Runs

The Napa Wilderness Trail Runs take place at Skyline Wilderness Park and feature a variety of distances through the Napa Open Space. The event includes four distinct race lengths:

  • 50K: An ultra marathon with approximately 6,700 feet of vertical gain.
  • 30K: A route featuring approximately 4,000 feet of elevation gain.
  • 21K: A half marathon distance with about 2,600 feet of gain.
  • 10K: A shorter course with approximately 1,300 feet of elevation gain.

The courses utilize the Rim Rock Trail, which provides views of Napa Valley, Mount Diablo, Mount Tamalpais, and Mount Saint Helena. The routes consist of various trail types, including newly added sections in the Napa Open Space.

This is a cupless event; participants must bring their own hydration systems or bottles, as no cups are provided at aid stations or the start area. Aid stations are positioned every 5 to 9 miles, offering water, hydration drinks, and various snacks. For the 50K and 30K distances, a specific 7-mile section contains only a water stop, requiring runners to be self-sufficient. Time cutoffs are in place for all distances, including a 10-hour limit for the 50K.

Participants receive a shirt and a lightweight insulated cup upon finishing. Awards are limited to the top three overall male and female finishers in each distance, provided there are at least 50 runners in the category. The event is manually timed, and results are posted online following the race. Visit the organization's website for the most recent information.

52 km
50k Ultra
18 mi
30k
14 mi
21k / Half Marathon
6 mi
10k

Events nearby

A community ultramarathon and hike at Skyline Wilderness Park in Napa, CA, featuring a 3.3-mile loop repeated up to ten times in an hourly format to raise funds for the Pheo Para Alliance.
40th annual 6.45-mile trail race in Annadel State Park on November 1, 2026, with staggered head starts, awards for the top 13, and limited registration.
Trail races at Jack London State Historic Park on April 17, 2027, offering a half marathon, 5.5 mile and 5K across vineyard views and Sonoma Mountain slopes.
Viansa Wine Run 5K in Sonoma on April 18, 2027 is a chip timed 5K at Viansa Winery with a race shirt, collapsible wine glass, finisher medal and a pour of wine.
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