THE BAD BASS IS BACK!

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 22nd 2017! 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!

Registration Fees

5K with race shirt

Jan 21 - Jun 4 $44.00
Jun 5 - Jul 2 Current Price $49.00
Jul 3 - Jul 21 $54.00

5K without race shirt, -$5.00

Jan 21 - Jun 4 $39.00
Jun 5 - Jul 2 Current Price $44.00
Jul 3 - Jul 21 $59.00

10K with race shirt

Jan 21 - Jun 4 $53.00
Jun 5 - Jul 2 Current Price $58.00
Jul 3 - Jul 21 $63.00

10K without race shirt, -$5.00

Jan 21 - Jun 4 $48.00
Jun 5 - Jul 2 Current Price $53.00
Jul 3 - Jul 21 $58.00

Half Marathon with race shirt

Jan 21 - Jun 4 $69.00
Jun 5 - Jul 2 Current Price $74.00
Jul 3 - Jul 21 $79.00

Half Marathon withOUT SHIRT

Jan 21 - Jun 4 $64.00
Jun 5 - Jul 2 Current Price $69.00
Jul 3 - Jul 21 $74.00

Remote Runner

Jan 20 - Jul 2 Current Price $40.00
Jul 3 - Jul 21 $45.00

Remote Runner without race shirt, -$5.00

Jan 20 - Jul 2 Current Price $35.00
Jul 3 - Jul 21 $40.00

Event Schedule

  • July 22 07:30 AM PDT - Hiker start (for those walking the half marathon, planning to take longer than 3.5-4 hours)

  • July 22 08:30 AM PDT - Half Marathon

  • July 22 08:55 AM PDT - 10K

  • July 22 09:10 AM PDT - 5K

Contact Information

Event Location

Castro Valley, CA, United States

Click Here to view map