What race distances can I run in San Mateo?
San Mateo has 5K (5), 10K (4), Half Marathon (4). The 5K is usually the easiest entry point if you are new, and the links above jump straight to each distance.
California · Race calendar
Running Races in San Mateo, California
Upcoming running races in and near San Mateo, California - 5Ks, 10Ks, half marathons and more, with dates, pricing, finish-time stats, start-line maps, and local run clubs to train with.
5 upcoming races · 1 with finish-time stats
By the numbers
The Biggest and Longest-Running
The San Mateo races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Sun, Sep 20, 202617th Annual GO2 San Francisco Bay Area 5K San Mateo, CAFrom $35Details Sat, Oct 10, 2026Cookie Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CAFrom $30Register Sat, Oct 10, 2026Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CAFrom $30Register Sat, Dec 26, 2026A Merry Christmas Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CAFrom $30Register Sat, Dec 26, 2026New Year's Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CAFrom $30Register
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Sep 10, 2026.
Common Questions About Racing in San Mateo
When is race season in San Mateo?
October is the busiest month for races in San Mateo, with 2 of the 5, followed by December with 2. If you are flexible on the date, that is the quickest way to narrow things down.
Where can I train for a race in San Mateo?
Browse San Mateo run clubs on RunSesh to find a training group at your pace.