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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 27th 2019! 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

    1. $48.00
      Aug 14 - Jun 2
      Register
    2. $53.00
      Jun 3 - Jun 30
    3. $58.00
      Jul 1 - Jul 26

5K No shirt

-$5.00

    1. $43.00
      Aug 14 - Jun 2
      Register
    2. $48.00
      Jun 3 - Jun 30
    3. $53.00
      Jul 1 - Jul 26

10K

    1. $57.00
      Aug 14 - Jun 2
      Register
    2. $62.00
      Jun 3 - Jun 30
    3. $67.00
      Jul 1 - Jul 26

10K No shirt

-$5.00

    1. $52.00
      Aug 14 - Jun 2
      Register
    2. $57.00
      Jun 3 - Jun 30
    3. $62.00
      Jul 1 - Jul 26

Half Marathon

    1. $73.00
      Aug 14 - Jun 2
      Register
    2. $78.00
      Jun 3 - Jun 30
    3. $83.00
      Jul 1 - Jul 26

Half Marathon No shirt

-$5.00

    1. $68.00
      Aug 14 - Jun 2
      Register
    2. $73.00
      Jun 3 - Jun 30
    3. $78.00
      Jul 1 - Jul 26

Remote Runner

    1. $40.00
      Aug 14 - Jun 30
      Register
    2. $45.00
      Jul 1 - Jul 26

Remote Runner No shirt

-$5.00

    1. $35.00
      Aug 14 - Jun 30
      Register
    2. $40.00
      Jul 1 - Jul 26

Event Schedule

  • July 27 7:30 AM PDT - Hiker start (for those walking the half marathon, planning to take longer than 3.5-4 hours)

  • July 27 8:30 AM PDT - Half Marathon

  • July 27 8:55 AM PDT - 10K

  • July 27 9:10 AM PDT - 5K

Contact Information

Event Location

Castro Valley, CA, United States

Click here to view map