California has a way of making a 13.1 feel like a whole adventure. One weekend you’re running through fog-draped redwoods, the next you’re chasing ocean breezes down the Central Coast. With 14 half marathons on the calendar in the coming months, there’s no shortage of reasons to lace up. Whether you’re chasing a new PR or just want a beautiful excuse to travel, these four stand out.
Hell Of A Half Marathon & 2 Person Relay
Saturday, August 8, 2026 — Exeter, California
If you like your races with a side of grit, this one’s for you. The name says it all: a no-frills half that’s equal parts challenge and charm. Bring a friend for the 2-person relay option if you want the bragging rights without all the miles. It’s the earliest race on this list, so if you’re ready to run now, it’s your fastest ticket to a California finish line.
Urban Cow Half Marathon
Sunday, September 27, 2026 — Sacramento, California
Sacramento’s Urban Cow is the rare race that feels both big-hearted and community-driven. It’s earned a Runner Favorite reputation, and it’s easy to see why: the course takes you through tree-lined trails alongside the American River, with just enough city flavor to keep things interesting. Fall in Sacramento is some of the best running weather you’ll find anywhere — think cool mornings and golden light. If you only pick one California half this season, this is a strong one.
2026 Humboldt Redwoods Marathon, Half Marathon, 5K
Sunday, October 11, 2026 — Weott, California
Some races give you a medal. This one gives you a forest. Set deep in Humboldt Redwoods State Park, this half course weaves through towering old-growth redwoods — the kind of scenery that makes you forget you’re racing. The October date usually means crisp, comfortable temps, and the smaller, focused vibe makes it a welcome choice for first-timers and veterans alike. If you want a race that feels like a retreat, this is it.
2026 - City to the Sea Half Marathon & 5K
Sunday, October 18, 2026 — San Luis Obispo, California
The name promises a journey, and this one delivers. Starting in downtown San Luis Obispo and winding toward the coast, City to the Sea is a picturesque tour through vineyards, rolling hills, and eventually the Pacific. It’s the kind of course that keeps you distracted from the miles. With an October date, you get that classic Central Coast weather — perfect for a long run and a post-race celebration. Bring the family; this one is as fun to spectate as it is to run.
Your Next California Half Awaits
These four races are just the beginning. California is packed with half marathons this season, from beachfront courses to mountain loops and everything in between. Explore the full calendar of half marathons in California to find the one that fits your speed, your schedule, and your sense of adventure. With races popping up all over the state, your next 13.1 might be closer than you think.