2019 Lake Chabot Trail Challenge

Sun June 2, 2019 Directions

Half Marathon

8:00AM PDT - 11:30AM PDT

5K Run

8:30AM PDT - 11:00AM PDT
Address for Lake Chabot: 17404 Lake Chabot Rd, Castro Valley, CA 94546

From the parking lot, just follow the signs to the registration and starting lines.

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).  

We are excited to announce that this race is part of the East Bay Triple Crown Trail Championships. It's a series of unique and challenging trail races every spring in the beautiful hills of the East Bay.

  1. Race 1: Tilden Tough Ten, May 19, 2019 at Inspiration Point, Tilden Regional, Berkeley.
  2. Race 2: Lake Chabot Trail Challenge Half Marathon, June 2, 2019 at Lake Chabot, Castro Valley
  3. Race 3:The Woodmonster Trail Race, June 23rd , 2019 at Redwood Gate, Redwood Regional Park, Oakland

The fastest combined times determine the overall male and female champions and the Ruth Anderson and Joe King senior division champions. Places will be determined and awards presented, immediately following the Woodmonster Race.  Overall male and female in the open division and senior division will win a pair of Brooks running shoes , 2nd and 3rd places  will be awarded a Transports Gift card.  Register now for all three!

Race Contact Info

If you have any questions about this race, click the button below.


Castro Valley Sports Foundation (CVSF) was founded in 2002, all volunteer-based, non-profit 510(c)(3) California organization that provides charitable assistance and support youth sports and athletics in Castro Valley. This fundraiser event and any sponsorship dollars will go directly to help widen and sustain sports participation in our community.

As CVSF pursues its commitment to raise funds for sports and athletics in Castro Valley, here is how CVSF has given back to the community:

In  2010, the CVSF donated $26,500 to the CVUSD to help fund all sports at CV high school and closed a CVUSD budget gap of over $250,000 that otherwise would have eliminated all high school sports at Castro Valley High School for 2010-2011 school year. 

In 2008, the CVSF donated another $16,500 to various interscholastic sports programs at Castro Valley High School. The money was distributed in 17 grants ranging in value from $300 to $1,500 and included all girls and boys programs such as: storage container for track and field, electronic scoreboard for wrestling, pitching machine for girls' softball, place clock for swimming, helmets for football, and training equipment for soccer.

In 2007, the CVSF donated $4,500 for the purchase of a portable batting cage for the CVHS baseball program. 

The CVSF donated more than $180,000 towards the CVHS football stadium project 

Most recently between 2011 – 2018, CVSF has donated between $15,000 - $28,000 yearly through the grant program to different youth sports organizations and teams from CV Little League, Canyon/Creekside Middle School Tennis Program, Elementary Schools Track Programs, CV Track Club, CVSC Top Soccer Program and numerous CVHS sports programs.

CVSF invites local businesses to become a sponsor for this event. For sponsorship details, please contact Rachel Lunt at teamlunt07@gmail.com.

Half Marathon course and elevation maps

Click the icon below to download the attached PDF.

5k course map

Click the icon below to download the attached PDF.


Address for Lake Chabot: 17404 Lake Chabot Rd, Castro Valley, CA 94546

From the parking lot, just follow the signs to the registration and starting lines.


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