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!
Related Events
Nitro Trail Half Marathon, 10k/5k
Date: May 30, 2026 - Saturday
Size: 100 - 500 participants
Location: Richmond, California
Bad Bass Half Marathon, 10k & 5k
Date: Jul 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Castro Valley, California
Dirty Dozen Endurance Runs
Date: Jul 25, 2026 - Saturday
Size: 100 - 500 participants
Location: Richmond, California
Summer Breeze Half Marathon, 10k/5k
Date: Aug 1, 2026 - Saturday
Size: 100 - 500 participants
Location: San Leandro, California
Bear Creek Half Marathon, 10k/5k
Date: Aug 8, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Pacheco, California
Double Dipsea
Date: Aug 22, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Stinson Beach, California
Rocky Ridge Half Marathon/10K/5K
Date: Sep 19, 2026 - Saturday
Size: 100 - 500 participants
Location: Danville, California
The Auburn Half Marathon, 12k/5k
Date: Sep 27, 2026 - Sunday
Size: 100 - 500 participants
Location: Auburn, California
Brazen New Year's Day Half Marathon, 10k/5k
Date: Jan, 2027 (TBD)
Size: 100 - 500 participants
Location: Castro Valley, California
Coyote Hills Half Marathon
Date: Jan, 2027 (TBD)
Size: 100 - 500 participants
Location: Fremont, California
Victory Half Marathon, 10K & 5K
Date: Feb, 2027 (TBD)
Size: 100 - 500 participants
Location: San Francisco, California
Western Pacific Half Marathon, 10k & 5k
Date: Mar, 2027 (TBD)
Size: 100 - 500 participants
Location: Fremont, California
Diablo Trails Challenge
Date: Apr, 2027 (TBD)
Size: 100 - 500 participants
Location: Walnut Creek, California
Badger Cove Half Marathon/10K/5K
Date: Apr, 2027 (TBD)
Size: 500 - 1,000 participants
Location: Livermore, California
Trailquake Half Marathon, 10k/5k
Date: May, 2027 (TBD)
Size: 100 - 500 participants
Location: Saratoga, California
Wild Cat Half Marathon, 10k & 5k
Date: May, 2027 (TBD)
Size: 100 - 500 participants
Location: Richmond, California
Run Pick of the Month - Napa to Sonoma Wine Country Half Marathon & Rosé 5K
Your ultimate Wine Country runcation awaits in July 2026!
Use code N2SRG26 to get $10 off on your entry!
Trade the concrete jungle for rolling vineyards and uncork a new running personal best at the Napa to Sonoma Half Marathon & Rosé 5K. This is more than a race, it's your perfect run-cation escape.
Choose your vintage: Take on the picturesque Rosé 5K around historic Sonoma Plaza, or conquer the world-class Half Marathon that winds point-to-point from Napa, past 30+ iconic wineries and beautiful ranches.
Experience an unforgettable, wine-centric finish in Sonoma Plaza, complete with a celebratory post-race festival featuring tastings from local wineries!.
Sign up now and experience the run-cation that runners repeatedly cite as a favorite!
🏃 Training for This Race?
Get a personalized training plan that adapts for every run. RunDot analyzes every run and automatically adjusts your training plan.
🎁 2 weeks free for RunGuides runners
🏃 Looking For More Runs Near San Jose?
Find another distance:
Race Facts
Race Size: 100 - 500
Elevation: Fast and Flat
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
Use this map to find hotels and airbnb accommodation near this race location.
