Western Pacific Marathon
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Event overview
Western Pacific 2026 is a running event on March 28, 2026 at Quarry Lakes Regional Recreation Area, 2100 Isherwood Way, Fremont, CA 94536. The event offers three in-person race distances and a remote runner option. The organizer notes the course follows sections of the Western Pacific Trail and Alameda Creek Trail.
Course and format
Distances:
- Half marathon
- 10K
- 5K
All races begin and end at Quarry Lakes. The 10K and half marathon routes use the Alameda Creek Trail. The course is described as mostly flat and follows trails that are primarily dirt fire roads. Some sections include gravel used for erosion control and there is a short paved section. Hikers, walkers, and runners are welcome. Visit the organization's website for the most recent information.
