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 Relay-2 Person
26 mi
Trail Marathon
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

Muddy Dash San Diego on June 6, 2026 is a noncompetitive 5K with obstacles, mud pits and slides at Barona Oaks Motocross Park, followed by an after party with music, food trucks and drinks. Value and VIP registration options are available.

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 3 mile community trail run at San Andreas Staging Lot in Del Mar on August 26, 2026. Limited to 250 participants, finishers receive a throwback shirt and medal distributed grab bag style.

A loop based endurance event at Montgomery Waller Community Park offering 24 hour and shorter timed races plus a HEFFTY half marathon. The course mixes trail, grass and bike path and provides oncourse aid and runner campsite facilities.

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