Lake Chabot

Location

Lake Chabot Regional Park, Castro Valley, CA 94546

Driving Directions

Directions

Course

The course starts at the Marina and travels around the popular Lake Chabot reservoir and surrounding hills. Great course for first-time trail runners!
(Distances are accurately measured using a Rolatape® surveyor's measuring wheel.)

Weather

Castro Valley

Lodging

Hotels

Bib Number & Shirt Pick-Up

7:00 a.m. - 7:45 a.m. at Lake Chabot Marina

Time Limit & Cut-Off

  • Marathon - 7.5 hours (3 hrs 45 min, 11:45 a.m. @ 13 mi)
  • 50 Km - 8.5 hours (3 hrs 15 min, 11:15 a.m. @ 13 mi)

Aid Stations

Fully-stocked aid stations every 4 - 5 miles. You can expect fresh fruit, salty snacks, assorted candy, water, and Clif Shot Electrolyte sports drink. It is highly recommended that runners carry at least 20 oz. of water between aid stations.

Awards

T-shirts will be given to all pre-registered runners. Award medals are given to the 1st female and male finishers overall and top three finishers in each age group. All finishers will receive a custom medal and 50 Km finishers will also receive a custom coaster.

Upcoming Races

Nov 7 2026
50 KM
3,980 3,980 ft.
Single Loop
8:30 Cutoff
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
2 Surface Rating
Mostly groomed trail or dirt roads

Additional Distances

This event also has the following sub ultra distances

26.2 Miles 30 KM 13.1 Miles 8 KM

Results

Date Finishers Top Result (F) Top Result (M)
11/08/25 38 4:26:09 4:09:34
11/16/24 37 4:32:34 4:52:46
11/04/23 28 6:01:31 4:08:41
11/05/22 35 4:11:30 4:06:53
11/06/21 38 5:00:27 4:01:19
11/07/20 Race Cancelled
11/09/19 48 4:17:24 4:27:54
11/03/18 27 6:12:23 4:31:47
11/04/17 36 6:13:43 3:47:35
11/05/16 38 6:01:42 4:04:51
11/07/15 26 5:20:27 4:13:57
11/08/14 45 4:53:37 4:32:19
11/09/13 47 5:00:41 3:32:43
11/03/12 53 4:53:44 3:48:15
11/05/11 34 4:40:35 4:08:06

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

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