Lake Chabot Trail Challenge Half Marathon & 5K

Sunday, June 2, 2024 • Castro Valley, CA • Course Map

Set for its 40th annual running along the dirt fire trails of Chabot Regional Park in Castro Valley, Calif., the Lake Chabot Trail Challenge Half Marathon & 5K race offers a rugged, challenging course for runners, with plenty of hills along a loop course throughout the park.

The race takes place just a short drive from the nearby cities of Oakland and San Leandro in the Bay Area, along the lake’s 20 miles of hiking trails — which connect to another 70 miles of trails in nearby Anthony Chabot Regional Park.

The park’s 315 acres play host throughout the year to fishing and boating enthusiasts, as it is stocked with trout and catfish as well as with plenty of rental canoes and tour boats. The park also offers ample hiking, bicycling and jogging trails, and tourists can enjoy seasonal lake tours aboard the park’s flagship “Chabot Queen.”

The course time limit for the half marathon is 3 1/2 hours, and the half marathon begins at 8:00 AM (the event also features a 5K race, and organizers add that race participants will share the roadways within the park with other runners, cyclists and pedestrians who aren’t taking part in the race).

Race Weather & Climate

Located along the eastern shore of San Francisco Bay in Northern California, about 25 miles southeast of downtown San Francisco, Castro Valley typically sees mild to moderately warm (and usually very dry) weather in June, a month that has brought record temperatures as low as 41 degrees (in 1976) and as high as 104 degrees (in 1960).

On race day (June 2), the average low is 51ºF and the average high is 71ºF.

Past Results

Course Map

See the race route map for the Lake Chabot Trail Challenge Half Marathon here.

Starting Time

  • 8:00 AM – half marathon
  • 8:30 AM – 5K


  • $50 – $55 for the half marathon
  • $35 – $40 for the 5K


To reserve your spot in the 2024 running of Castro Valley’s Lake Chabot Trail Challenge Half Marathon or 5K race, register online at here.

Official Race Website


Ever run in the Lake Chabot Trail Challenge? Share your impressions here, or post your review in the Comments below.

See more races in: June, California

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