Registration for the following events is now open:
  • Marathon Relay-the Relay is sold-out, but members can join an existing team
  • 12K
  • 5K
  • 3K

SOLD-OUT EVENTS include the Marathon (including the JUST RUN and RW VIP categories), Boston 2 Big Sur, the 21-Miler, the 11-Miler, and the Marathon Relay.

Other Marathon registration opportunities available by:

All event entry fees can be viewed HERE.

If you have any questions about registration, please email the registrar at or call at 877.228.4881.
For general race questions, email or or call 831.625.6226 during normal business ho

If you received a confirmation email, then you are registered for an event. If you did not receive one, be sure to check your spam and all mail folders. Entries can also be confirmed by going to My Events at If you do not have an Active account, you can email the Registrar at for a copy of your confirmation

Bib numbers will be assigned in mid-April and emailed/texted to all registered participants during the week prior to the race. Once assigned, they may also be looked up on our mobile app. To download the app, search for BSIM Events by Racemine.

We apologize for any inconvenience.