Rankings · updated September 7, 2026

Best 5Ks in San Mateo, CA

None have enough measured for a composite score yet, so instead they're ranked below by how long they've been run — a fact each race states itself. How scoring works →

Longest-running races

1 races we can date but haven't measured enough of to score. Oldest first. What we measure →

  1. 1 17th Annual GO2 San Francisco Bay Area 5K San Mateo, CA Sep 2026 2010 16 years running

Listed races

4 races we list but haven't measured enough of to score. By date. What we measure →

  1. Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CA Oct 2026 Not yet rankedno verified data
  2. Cookie Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CA Oct 2026 Not yet rankedno verified data
  3. Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CA Nov 2026 Not yet rankedno verified data
  4. A Merry Christmas Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CA Dec 2026 Not yet rankedno verified data

Races worth traveling for

Twice a month: the races our data says are worth the trip — picked by the numbers, never pay-to-play. Plus a heads-up when your race's week arrives. One-click unsubscribe, always.