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Join the party!

Celebrate 90 years!

CATCH A PERSONAL RECORD!

RUN FOR REGIONAL PARKS

Calling all runners, walkers, hikers and nature enthusiasts! Get ready for an exhilarating day of Lakeside Laps at Lake Chabot—a celebration of wellness, community, and the beauty of the East Bay Regional Park District!

SATURDAY, JULY 20TH

LAKE CHABOT REGIONAL PARK

CASTRO VALLEY, CA

Since 2010, this signature summer race (AKA "The Bad Bass Trail Runs") has been a cherished tradition.

This year's event promises to be extra special as we mark the 90th anniversary of the East Bay Regional Parks District and support the invaluable work of the Regional Parks Foundation.

Here's what's in store for you:

  • Scenic Routes Immerse yourself in the tranquility of nature as you run along the picturesque shores of Lake Chabot. Every step is a reminder of the breathtaking beauty that surrounds us.
  • Multiple Distances Whether you're aiming for a half marathon, 10K or a 5K “Trout Trot” sprint, Lakeside Laps has a race for every level of runner. Choose your distance and prepare for an unforgettable journey.
  • Festive Vibes Experience the thrill of accomplishment and the joy of camaraderie as you cross the finish line. Lakeside Laps is more than a race—it's a celebration of community, friendship, and the shared love of outdoor adventure.
  • Supporting Our Parks Nature is essential.  By participating in Lakeside Laps, you're not just challenging yourself—you're also contributing to conservation and access for all to our beloved East Bay regional parks. Together, we can ensure that our communities coexist with the beautiful nature and habitats that we rely on.

Ready to lace up and make a difference? Registration is now open!

Don't miss out on this opportunity to connect, celebrate, and give back—sign up today to run for regional parks!

Lakeside Laps awaits—see you at the starting line!

Jump in!

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RACE DETAILS

RACE INFO

Everything you need to know.

COURSE

Three emerald courses await you.

FAQ

Frequently asked questions.

RESULTS

Check out your race standing and finishing time here.

RACE PHOTOS

Provided for free by our volunteer photographers.

VOLUNTEER

Help your family and friends by volunteering!

JOIN US AT THE LAKE

2024 SPONSORS

Thank you to our race sponsors, through their contributions, our sponsors help keep entry costs down and expose our runners their outstanding products and services. Learn more about becoming a sponsor.

There is something about the ritual of the race, putting on the number, lining up, being timed, that brings out the best in us.
Grete Waitz