In 168 days · Sat, Mar 27, 2027
Don't let race day sneak up
One email during race week. That's it.
Saturday, March 27th, 2027
2100 Isherwood Way, Fremont CA
Half · 5K · 10K
48–63°F · some rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2026
51–81°F
dry
2025
55–65°F
dry
2024
45–60°F
rain
2023
37–59°F
dry
2022
50–64°F
rain
2021
46–67°F
dry
2020
45–56°F
dry
2019
51–61°F
rain
2018
45–68°F
dry
2017
50–60°F
dry
Best months to race in California →
Going long?
Fuel wins races.
Gels, chews, electrolytes, anti-chafe — everything for 13.1 and beyond.
About this race
Race Overview
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!
Event Details
- Date: 2027-03-27
- Time: 2100
- Location: 2100 Isherwood Way, Fremont, CA
- Registration: Sign up here
Course Highlights
- Terrain: Mostly flat
- Historical Significance: Part of the Transcontinental Railroad construction
- Ideal for: Personal bests
- Scenic views: Enjoy the beautiful landscape of the trail
Course map
Train with a club
Run clubs near Fremont to train with before race day.
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.







