California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 406 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
July 2027
Auburn, CA half marathon that mixes trail running with extreme ironing at eight named locations along the Western States Trail.
A night trail running event in Anza, CA with looped courses from timed efforts to a 50K held under a full moon; field limited to 225 runners.
A 135 mile invitational ultramarathon from Badwater Basin to Whitney Portal with an international field, strict qualifying standards, and a 45 hour time limit.
Multi-distance trail event in Downieville and Sierra City on July 23-24, 2027 offering 100K, 50K, 25K and a Summit VK+ with multiple aid stations and high elevation gain.
A 24 hour loop event at Montgomery Waller Park featuring a 1.22 mile mixed-surface loop, multiple timed divisions, a half marathon option, and a social run.
August 2027
Mountain road and trail races at Green Valley Lake offering 5K, 10K and half marathon courses with aid stations, chip timing, and post-race community activities.