Rim Rock 50 Mile Trail Challenge

Rim Rock 50 Mile Trail Challenge : Skyline Wilderness Park, Napa, CA

The Rim Rock event is an inaugural trail ultramarathon held in Skyline Wilderness Park and nearby open space in Napa Valley. The event offers the following options:

• 50 mile solo
• 50 mile relay (two-person teams)

The course uses two rugged loops of approximately 26 miles each through Skyline Wilderness Park, the Napa Open Space Preserve, and the Suscol Headwaters trail system. Solo runners are scheduled to run both loops; relay teams of two each run one loop. The published route may be modified before race day for trail conditions and access.

Aid stations: four staffed aid stations will provide food, salty snacks, fruit, and hydration. The race is cupless; all participants must bring their own reusable cup, bottle, or hydration system. Aid stations will refill personal containers and reusable cups may be available for purchase at registration or on race day.

Crew and pacer policies: crew access is limited to the start/finish area and the Lake Marie aid station; crew are not allowed at certain aid stations in the Napa Open Space or Suscol Headwaters. Pacers are permitted only for solo runners on the final 25 mile loop.

Entries and swag: entry fees are non-refundable and non-transferable. Registered runners receive a dry wick race shirt; finishers receive a Rimrock trucker hat. Additional event details, camping options at Skyline Park, and volunteer opportunities are provided by the organizers. Visit the organization's website for the most recent information.