October 2026 races in San Francisco Bay Area

There are 14 running events listed in San Francisco Bay Area for October 2026 — 12 5K, 7 10K, 6 Half Marathon, 2 Marathon, 2 Trail Run — starting with Napa Half Marathon on Sun, Oct 4, 2026. Every listing shows the date, venue, and distances, with a direct link to registration.

• Sun, Oct 4, 2026 Napa Half Marathon 2201 Imola Ave · Napa, CA · From $70 5KHalf MarathonMarathon Road
• Sat, Oct 10, 2026 Ruth Anderson Memorial Endurance Run Lake Merced Blvd Parking Lot (North) · San Francisco, CA Trail Run Trail
• Sat, Oct 10, 2026 Bagel Run 5K/10K/13.1 SAN FRANCISCO Seal Point Park (Course Map will be emailed) · San Mateo, CA · From $30 5K10KHalf Marathon Road
• Sat, Oct 10, 2026 Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO Seal Point Park (Course Map will be emailed) · San Mateo, CA · From $30 5K10KHalf Marathon Road
• Sat, Oct 10, 2026 East Bay Front Runners Pride Run and Walk 568 Bellevue Avenue · Oakland, CA · From $40 5K10K Road
• Fri, Oct 16, 2026 Bike to Hope 2026 Lagunitas Brewery · Petaluma, CA Trail Run Trail
• Sat, Oct 17, 2026 Reentry Resource Center’s Rise Up and Run 5K Hellyer County Park - Cottonwood · San Jose, CA · From $41 5K Road
• Sat, Oct 17, 2026 The Donut Fun Run 2026 2151 Ferry Point Road · Alameda, CA · From $39 5K Road
• Sun, Oct 18, 2026 Lafayette Res Run for Education Lafayette Chamber Office: 251 Lafayette Circle, Ste 150 · From $30 5K10K Road
• 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

Quick answers

How many races are there in San Francisco Bay Area in October 2026?

14 running events are listed in San Francisco Bay Area for October 2026, from Napa Half Marathon on Sun, Oct 4, 2026 to ZombieRunner Halloween on Sat, Oct 31, 2026. Every listing links directly to registration.

What distances can I race in San Francisco Bay Area in October?

The October 2026 calendar in San Francisco Bay Area includes 12 5K, 7 10K, 6 Half Marathon, 2 Marathon, 2 Trail Run.

What is the first race of October 2026 in San Francisco Bay Area?

Napa Half Marathon on Sun, Oct 4, 2026 at 2201 Imola Ave.