Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO

Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO sends runners through the streets of San Francisco, California, on October 31, 2026. The half marathon (13.1 miles), the 10K, the 5K and a family one-mile fun run all start at 7:30 a.m. The annual race is open to all levels, and finishers receive a runner shirt and a finisher medal.

Cool coastal mornings are good for racing but cold for standing around, so keep a throwaway layer on until close to the gun. The half marathon is the day's main event and deserves a full build, roughly twelve weeks with one long run a week; the 10K and 5K reward speed you already have. Waves are capped to keep the field moving, complimentary treats follow the finish, and a virtual entry is available for anyone who cannot attend.