Share

Western Pacific Half Marathon/10K/5K

Mar 28, 2026 at 7:00 AM

2100 Isherwood Way, Fremont CA, 94536, USA

Feature this race

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.

Race event photo
Distance(s)
  • 10K
  • 13.1M
  • 5K
Starting Elevation
10
Type
  • Trail
Prize Money
no
Course Percentage
100% on un-paved trails
First Year of the Event
2011
High Point
50
Entry Fee(s)
$45 (Lowest / Early Registration), $100 (Highest / Late Registration)
Men's Record
Half Marathon: Blake Furnam, 1:13:06 (2025)
Women's Record
Half Marathon: Caitlin Smith, 1:22:31 (2015)

Event History

2025
Mar 29, 2025View Results →
2024
Mar 30, 2024View Results →
2023
Apr 22, 2023View Results →
2022
Apr 23, 2022View Results →
2019
Apr 27, 2019View Results →
2018
Apr 28, 2018View Results →
2017
Apr 29, 2017View Results →
2016
Apr 30, 2016View Results →
2015
May 02, 2015View Results →
2014
May 03, 2014View Results →
2013
May 04, 2013View Results →
2012
May 05, 2012View Results →
2011
Apr 16, 2011View Results →