San Diego 100

The San Diego 100 Mile Running Race is a challenging endurance event set in the scenic Mt. Laguna Recreational Area, featuring a 90% single-track mountain course. Scheduled for June 6, 2025, this race covers approximately 15,400 feet of climbing and descent, with a 32-hour completion limit.

It serves as a qualifier for the prestigious Western States 100, requiring participants to have completed a qualifying race within specific timeframes. Entrants must also fulfill a volunteer requirement or make a donation to support trail maintenance. The event emphasizes community involvement and offers a Solo Division for those running unsupported. Visit the organization's website for the most recent information.