Western Pacific Half Marathon, 10k & 5k
Fremont, California, United States
Mar, 2027 (TBD)
5k, 10k, Half-marathon
Race Information
Used in the 1800s to transport gravel for the construction of the western section of the Transcontinental Railroad, the Western Pacific Trail now forms a part of this mostly-flat course where you can haul in a personal best!
All races begin and end at Quarry Lakes. The 10K and half marathon races go out along the Alameda Creek Trail. Trails are primarily dirt fire trails, with sections that include gravel (used by the parks to prevent erosion) and a short paved section.
Hikers/walkers/runners of all levels are always welcome!
Run Pick of the Month - Bay to Breakers
Get ready to be part of history! Bay to Breakers isn't just a 12K; it's the oldest consecutively run annual footrace in the world, held in May 2026.
A legendary staple of the City by the Bay since May 1912, this race has been interwoven into the very fabric of San Francisco, creating a wild, beautiful, and unforgettable celebration of life, community, and pure, unadulterated fun.
The classic 12K is amazing, but if you're looking for an extra push, you're covered with the Breakers Bonus 3K. Turn your run into an epic 15K challenge and make your Bay to Breakers experience even bigger, bolder, and wilder.
Lace up and get ready for a course that takes you through the most iconic, vibrant neighborhoods in the world. Click the button below to get all the details.
Don't just run a race, join a legend.
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Race Facts
Race Size: 100 - 500
Elevation: Fast and Flat
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
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