San Diego 50 Mile & Trail Marathons

Escondido, United States • 9 Jan 2027

Event Overview

The San Diego 50 and Trail Runs take place in Escondido, California. This event features a wide range of distances on trail surfaces, providing options for various experience levels and technical preferences. Participants can choose from ultra distances, traditional marathon lengths, and shorter runs.

Distance Options

Participants can choose from the following events:

  • 50 Miles: A trail ultra marathon.
  • 26.2 Miles: A trail marathon.
  • 26.2 Miles Relay: A two-person relay format with a transition at mile 13.1.
  • 13.1 Miles: A trail heavy half marathon.
  • 10 Miles: The Summit Chase Challenge, an out and back course to Raptor Ridge.
  • 5 Miles: The Valley 5M, a flat course along the valley floor.
  • 3.1 Miles: A stroller-friendly trail 5k on flat terrain.
  • 1 Mile: A non-timed youth run for children aged 10 and younger.

Course Details

The marathon and 10-mile courses include a climb to the summit of Raptor Ridge, which reaches an elevation of 688 feet. In contrast, the 5-mile and 5k courses are designed to be flat and fast, situated primarily on the valley floor. The marathon relay includes a physical exchange point at the Piedras Aid Station, where parking is available for vehicle-based runner transitions as no shuttle service is provided.

Important Information

The event operates as a cupless race series. No disposable cups are provided at the aid stations, and all runners are required to bring their own hydration vessel to carry fluids during their event. Youth-specific categories are available for the 10-mile and 5-mile distances for participants under the age of 19. Visit the organization's website for the most recent information.

Race information

50 mi
50 Mile
26 mi
Trail Marathon
26 mi
Trail Marathon Relay-2 Person
13 mi
Trail Heavy Half Marathon
10 mi
Summit Chase Challenge 10m
5 mi
Valley 5m
3 mi
Stroller Trail 5k
Elevated Youth 1 Miler
Visit the organization's website for the most recent information.
Trail runs nearby

A trail running event at Mission Trails Regional Park in Santee on May 23, 2026 offering 50K, 25K and 5K courses across steep climbs and rocky descents. Entry is limited to 300 runners.

A family friendly 5K mud run at Barona Oaks Motocross Park in San Diego on June 6, 2026. The course features mud pits, obstacles, and slides and the day includes a Pre Party and an After Party with music and food trucks.

A trail race at Black Mountain in San Diego with 50K, 25K and a half marathon on June 20, 2026. The event follows Trail Sisters guidelines and features aid stations staffed by ham radio experts.

A free, untimed community trail run on August 26, 2026 at San Andreas Staging Lot in Del Mar, CA. The 3 mile out and back on groomed trail includes a vintage ERS shirt and medal and is limited to 250 participants.

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