7 events in Oakland, California

Rising up from the depths of Lake Chabot, the Bad Bass (a strangely kilt-wearing, bagpipe-playing Scottish bass with teeth) shows itself once again on July 18th 2026! Why is he Scottish? What is he doing in Castro Valley? How can he play bagpipes with his fin? We have no idea how to answer those questions. Why is he so bad-to-the-fishbone? Maybe he just knows how awesome the trails of Lake Chabot really are!

Whatever the Bad Bass is doing here, we hope you'll join us at the beautiful Lake Chabot Marina in Castro Valley for the scenic Bad Bass 5K, 10K or Half Marathon!

Support Oakland Tech Students and Programs

Join us for a 5K trail race or 1-mile fun run/walk in beautiful Joaquin Miller Park on November 2, 2025 (end of Daylight savings time.) The course winds through towering redwoods and offers both a scenic stroll for casual participants and a challenging route for competitive runners.

This event is a fundraiser for the Oakland Tech PTSA, which provides invaluable funding for student programs and activities. Every dollar makes a difference for our students. The PTSA supports the Oakland Tech Cross Country team by covering costs for meet entry fees, training equipment, nutrition, and travel — all essential for helping our runners perform at their best.

Oakland Tech Cross Country athletes have a proud tradition of success, with varsity cross country teams winning the Oakland League Championship for three of the past four years. Your participation helps continue this tradition of excellence.

Sign up for the race or make a tax-deductible donation to show your support for Oakland Tech students.

Bib pick-up: Saturday, October 31, 2pm-4pm @ Transports or Sunday, November 1rd, 8:30am @Joaquin Miller Meadow

Date: November 1, 2026

• 1 mile Fun Run/Walk Race Start: 9:00 am

• 5 km Trail Race Start: 9:30 am

Can't run but want to support us? Donations are tax-deductible. Tax ID: 94-6174624