I'll admit, I'm not out running marathons every weekend, but living in San Diego, you can't help but notice how running events are woven into the rhythm of the city. You see groups training by the beach at sunrise, and it feels like every season brings another great 5K, 10K, half marathon, or full marathon.
From scenic coastal routes to urban courses that take you through our distinct neighborhoods, these races offer a genuine sense of togetherness. Even if you're not running, it's hard not to get swept up in the excitement.
Register Early!
I've found that many of the most popular races will open registration as early as a year in advance. For example, the San Diego Beach and Bay Half Marathon is already taking registrations for the April 2027 event.
I'd suggest you sign-up early to secure your spot (many races will sellout), get the best entry price (it's common for race prices to increase as race day approaches), and finally to have something to look forward to and prepare for.

Run PB Challenge Metal at the San Diego Santa Run
What is the PB Run Challenge?
The PB Run Challenge is a three race, year-long 'challenge' where if you complete three annual races in Pacific Beach - the Leprechaun Run, PB Half Marathon & 5K, and the San Diego Santa Run - you'll receive a really awesome oversized medal to commemorate your accomplishment.

The Start of the Santa Run in Pacific Beach
New Races Added for Our 2026 / 2027 Edition
Many of San Diego's most popular races are unique, annual events that I have to include every year as part of our list. But there are also some more niche events, and ones I personally haven't tried yet myself, that sound like they'd be a fantastic experience.
So, this year our team at Go Visit San Diego worked together to zone in on what we think were a nice assortment, spread throughout the year, of races you should consider.
Many of the races are making their very first appearance on our 2026 & 2027 edition of San Diego's best 5Ks, 10Ks, half marathons & marathons and we're excited to share!