Western Pacific Marathon

Fremont, United States • 28 Mar 2026

The Western Pacific Marathon event, held at Quarry Lakes Regional Recreation Area in Fremont, California, offers runners a choice of half marathon, 10K, and 5K distances. The course is mostly flat, following the historic Western Pacific Trail, which was originally used in the 1800s to transport gravel for the Transcontinental Railroad construction. This scenic and accessible route provides an excellent opportunity for participants to achieve personal bests. The event supports the East Bay Regional Parks Campership Program and includes options for remote runners. It combines a rich historical backdrop with a well-organized race experience in a beautiful regional park setting. Visit the organization's website for the most recent information.

Race information

21 km
Half Marathon
10 km
10k
5 km
Visit the organization's website for the most recent information.
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