Napa Wilderness Trail Runs
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Napa Wilderness Trail Runs : May 16, 2026
The event takes place at Skyline Wilderness Park in Napa, CA on Saturday, May 16, 2026. Distances offered include:
- 50K
- 30K
- 21K (half marathon)
- 10K
Registration closes Friday, May 15 at 11:59 PM PT. The park address is 2201 Imola Ave., Napa. A $6 parking fee is included with race registration for the event parking; visitors who enter separately must pay the park fee. Dogs are allowed in the start, finish, and camping areas but are not permitted on the trails.
Course, aid, cutoffs and logistics
The 50K and 30K routes climb the Rim Rock Trail and include steep uphill sections and valley views. From the summit there are views toward Mount Diablo to the east, Mount Tamalpais to the west, and Mount Saint Helena to the north. The 21K is described as a moderate route. Course maps and elevation charts are available through the event's mapping resources.
Aid stations are provided at the start, finish, and on course, averaging every 5 to 9 miles. Aid is served touchless; volunteers will pour fluids or place prepacked snacks for runners. Plant-based options are available. The 30K and 50K include a roughly 9-mile section served by a water-only stop, so runners should carry nutrition and water for that segment. Cutoff times: 10K 4 hours, 21K 6 hours, 30K 8 hours, 50K 10 hours (runners must complete the 30K portion within 6 hours to continue for the final loop). Results are posted within 72 hours and timing is manual. Visit the organization's website for the most recent information.
