When are most Half Marathon races held in San Mateo?
October is the busiest month for Half Marathon races in San Mateo, with 2 of the 6, followed by November with 2. If you are flexible on the date, that is the quickest way to narrow things down.
California · Half Marathon
Half Marathon Races in San Mateo, California
Every upcoming Half Marathon around San Mateo, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
6 upcoming Half Marathon races found
Sat, Oct 10, 2026Bagel 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, Nov 28, 2026Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO San Mateo, CAFrom $30Register Sat, Nov 28, 2026Thanksgiving Gobble Trot 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 Jul 27, 2026.
Common Questions About Running a Half Marathon in San Mateo
How much do San Mateo Half Marathon races cost?
Entry fees for Half Marathon races here run from $30 to about $30, depending on the event and how early you register.
Where can I train for a Half Marathon in San Mateo?
Browse San Mateo run clubs on RunSesh to find a training group at your pace.