Born to Run Ultra Marathon

MAY
12-16
2027
Weeklong trail ultra in Los Olivos CA with 100 mile and shorter loop races, onsite camping, aid stations and chip lap counting.
12-16 May 2027
100 miles 30 miles 20 miles 10 miles

Always double-check with the organizer's website! This page may contain affiliate links.

Born to Run Ultra Marathons

Born to Run Ultra Marathons is a multi-day trail running event held at a ranch near Los Olivos, CA from May 12 to May 16, 2027. Event capacity is limited to the first 300 registered participants and guests. The organizer lists an intention to hold the event as planned but may amend or cancel if required by health officials, permit holders, or property owners.

The event offers onsite camping, marked dirt trails, aid stations about every 5 miles, and electronic chip lap counting. All ranch visitors must be registered as a runner or guest. A daily ranch fee of $10 per person is payable at check in in cash. No refunds, transfers, or deferrals are allowed.

Course details: the route is 100 percent dirt made up of ranch roads and single-track. The format uses two one-way roughly 10 mile loops that meet at the center, allowing vehicle access every 10 miles and permitting self-crewing from a vehicle. Loop 1 is about +2100 ft gain and marked with pink ribbon. Loop 2 is about +1600 ft gain and marked with yellow ribbon. Striped ribbon indicates turns; blue ribbon marks the wrong way. No dogs are allowed on the course.

Race options and passes include:

  • Four day 96 hour option, 100 or 200 mile buckle available
  • Three day 72 hour option, 100 mile buckle available
  • 100 mile race, finish within 48 hours
  • 30 mile race, three 10-mile loops
  • 20 mile race, two 10-mile loops
  • 10 mile race, one 10-mile loop
  • Guest day pass, ranch access per day

Guest day passes are sold in 1 to 4 day increments and cost $35 per day. Specific awards, shirts, and finisher items are provided for each distance as described by the organizer. Visit the organization's website for the most recent information.

100 mi
Born to Run 100 Mile
30 mi
Born to Run 30 Mile
20 mi
Born to Run 20 Mile
10 mi
Born to Run 10 Mile
Born to Run Three Day
Born to Run Four Day
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