Western Pacific Half Marathon/10K/5K

20221223
2026-03-28

Mar 28, 2026 at 7:00 AM

2100 Isherwood Way

Fremont CA, 94536

USA

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Entry Fee $45
(Lowest or Early Registration)

Entry Fee 2 $100
(Highest or Late Registration)

Prize Money: no

Distance(s):

10K
13.1M
5K

Type: Trail

Starting Elevation: 10

High Point: 50

Percent of the course on un-paved trails: 100%

First Year of the Event: 2011

Men's Record: Half Marathon: Blake Furnam, 1:13:06 (2025)

Women's Record: Half Marathon: Caitlin Smith, 1:22:31 (2015)

Description:

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! The marathon course is now USATF certified and can be used to qualify for races like the Boston Marathon! In addition to the marathon distance, half marathon, 10K and 5K races will also take place.