Brazen New Year’s Eve Half Marathon, 10K & 5K

Sunday, December 27, 2020 • Fremont, CA • Course Map

Set for its 10th annual running as part of a pair of races offered around the New Year in Northern California’s Quarry Lakes Regional Park, the Brazen New Year’s Eve Half Marathon follows an out-and-back course with a loop section in the beginning.

Runners will follow an out-and-back loop course that starts and finishes at the Quarry Lakes Regional Park next to Horseshoe Lake, which lies along the Old Creek Trail that goes around the lake.

After rounding the lake, they’ll follow an out-and-back route along several of the park’s flat, scenic trails, including the paved section of the Alameda Creek Trail.

Runners will need to be ready for the possibility of a wet-weather run and some muddy terrain around the lake, as rain is always possible this time of year in the San Francisco Bay Area. However, the hills aren’t quite as challenging as some other trail races in the local area, but still provide enough of a challenge to make the race interesting.

Race Weather & Climate

Located on the eastern side of San Francisco Bay, about a 20-minute drive south from Oakland, the city of Castro Valley lies just south of Chabot Regional Park and typically sees cool, mild weather this time of year.

On race day (Dec. 27), the average low is 41ºF and the average high is 58ºF.

Past Results

Course Map

See the race route map for the Brazen New Year’s Eve Half Marathon here.

Starting Time

  • 7:30 AM – half marathon hikers
  • 8:30 AM – half marathon
  • 8:55 AM – 10K
  • 9:10 AM – 5K


  • $74 – $84 for the half marathon
  • $56 – $66 for the 10K
  • $51 – $61 for the 5K
  • Deduct $5 to register without a race shirt


To reserve your spot in the 2020 running of Fremont’s Brazen New Year’s Eve Half Marathon, 10K or 5K race, register online at here.

Official Race Website

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See more races in: December, California