Lake Chabot Trail Challenge - Half Marathon & 5K

The 36th annual Lake Chabot Trail Challenge Half Marathon and 5K will now be hosted by Castro Valley Sports Foundation (CVSF). Started by the Golden Bay Runners 35 years ago and taken over 11 years ago by the Castro Valley Track Club (CVTC), this long-standing, historic event will continue in it's 36th year. CVSF is honored to host this icon event and is looking forward to carrying the torch for years to come.

The course is a scenic, hilly loop, mainly on dirt fire roads.  The ridge-line views look down upon scenic Lake Chabot, surrounding grassy slopes, and eucalyptus groves.  Mt. Diablo and San Francisco Bay are visible along the route. There are water stations with first aid and radio support; we recommend bringing your own hydration as well.  The half marathon has a time limit of 3.5 hours. 

The 5k (3.1 miles) course has gentle rolling hills and consists mostly of paved surfaces.  This route includes one water station with first aid and radio support. 

Both races are chip-timed.  High quality t-shirts for the first 300 participants.  Finisher's medals to those who complete their race.  Age division medals given to the top 3 in each of 10 age divisions in the half marathon and 12 age divisions in the 5K.

The entrance closest to the event's parking lot is: 17404 Lake Chabot Road, Castro Valley, CA 94546.  On Google Maps, this will appear as "Entry of Lake Chabot Parking Space."  The registration area and start lines are just a few minutes walk from the lot ( just follow the signs).