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Expect lots of hills, dirt, and awesome views in the Lake Chabot Trail Challenge. Choose between a challenging Half Marathon or a more gentle 5K, and enjoy stunning views over Lake Chabot and its surrounding slopes and eucalyptus groves. Celebrate with a unique finisher's medal & post-race raffle.

How to enter the Lake Chabot Trail Challenge

  1. Half Marathon

    Run 13.1mi
    Event passed
  2. 5K

    Run 5km
    Event passed

Lake Chabot Trail Challenge routes

Half Marathon:

The half marathon course set at Lake Chabot will take you along dirt fire roads with a couple of hills to get the legs burning. Along the ridge, runners will be treated with scenic views of the Lake, surrounding grassy slopes and leafy eucalyptus groves. Along the route, you will be able to spot Mt. Diablo and San Francisco Bay as you zoom towards the finish line.


The 5K route will be slightly gentler, with rolling hills along mostly paved surfaces. It will be an out and back run, so runners know what to expect on their return journey.

There will be aid stations along the course with water and first aid.

Event Details

What’s Included
  • Chip timing
  • Tech t-shirt
  • Finisher's medal
  • Age division medals for top 3 in each age group
  • Drinks and snacks after the race
  • Raffle prizes post-race
Raceday Logistics


08:00: Half Marathon Start

08:30am: 5K Start

11:30am: Half Marathon Cutoff Time

Please arrive at least 45 minutes before race time to ensure plenty of time to find parking, pick up your bib and warm up for the race.


There will be toilets available at the start line


Spectators are welcome and encouraged to convene at the start/finish lines to cheer on their runners.

Frequently Asked Questions

Where will I get my bib for the Lake Chabot Trail Challenge?
Bibs will be picked up on race day from 7am at the start location
Will the Lake Chabot Trail Challenge still take place if the weather is bad?
Yes, this race will take place rain or shine.
Can I register for the Lake Chabot Trail Challenge on the day?
Yes, there will be registration available on the day for $45 for the 5K and $65 for the Half Marathon. Only Cash and Check are accepted for on the day entries.

Lake Chabot Trail Challenge weather forecast

Clear throughout the day.

Predicted highs
Predicted lows
IconLight breeze possible, up to 9mph

Meet the organiser

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The Castro Valley Track Club offers youth track and field and cross country training and competition though USA Track and Field and its Junior Olympic programs. We have an outstanding, dedicated coaching staff for all events, including high school mentor coaches



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