San Francisco Bay Area Halloween Runs 2026 — Costume 5Ks & Spooky Races

Costumes at the start line, candy at the finish: San Francisco Bay Area has 6 Halloween-season races on the 2026 calendar, from pumpkin runs to full costume-contest 5Ks. Most award prizes for the best outfit — check each listing's organizer page for contest rules. The next one up is USS Hornet Halloween 5k on Sat, Oct 31, 2026. Every listing links straight to registration.

• Sat, Oct 31, 2026 USS Hornet Halloween 5k 707 West Hornet Avenue · Alameda, CA · From $25 5K Road
• Sat, Oct 31, 2026 Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO Crissy Field (Course Map will be emailed) · San Francisco, CA · From $30 5K10KHalf Marathon Road
• Sat, Oct 31, 2026 PB&J Fuel Run 5K/10K/13.1 SAN FRANCISCO Crissy Field (Course Map will be emailed) · San Francisco, CA · From $30 5K10KHalf Marathon Road
• Sat, Oct 31, 2026 Gardner Health Services 2026 Día de los Muertos Run-Walk 1621 Gold Street · San Jose, CA · From $25 5K Road
• Sat, Oct 31, 2026 ZombieRunner Halloween Hellyer County Park (Buena Vista Pavilion) · San Jose, CA · From $25 5K10KHalf MarathonMarathon Road
• Sat, Nov 14, 2026 ZombieRunner Quarry Lakes Quarry Lakes Regional Recreation Area (Ensenada Pavilion) · Fremont, CA · From $25 5K10KHalf Marathon Road

Race-day tip

Test-run your costume BEFORE race morning. Capes tangle, masks fog, and inflatable dinosaurs add about two minutes per mile.

Looking beyond halloween? See every upcoming San Francisco Bay Area race →