This quirky event celebrates the mysterious appearance of a kilted, bagpipe-playing Scottish bass rising from Lake Chabot on July 18th, 2026—and we're still scratching our heads about how he pulled that off! Whether you're drawn by the legend of this fin-tastic fish or the stunning trails around Lake Chabot, you can join us at the Marina in Castro Valley to tackle a 5K, 10K, or Half Marathon. Come experience the beautiful scenery and find out why the Bad Bass thinks these trails are so awesome!