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Registration for the 2016 Marathon lottery will begin on July 16, 2015 at 7 AM PDT.  For more information on the lottery, click HERE.

Registration for the 21-Miler, 10.6-Miler, 9-Miler, Relay, 5K and 3K will begin on September 1, 2015 at 7 AM PDT on a first-come, first-served basis.

Registration for the Boston 2 Big Sur lottery will begin on October 1, 2015 at 7 AM PDT.  For more information click HERE.

Event entry fees will be available in mid-June 2015.

If you have any questions about registration, please email sally@bsim.org.  for general race questions, email info@bsim.org or doug@bsim.org or call 831.625.6226 during normal business hours. 

Once registered, you can confirm your entry after 24 hours by clicking on one of the buttons below (either BSIM events or the Runner's World Challenge).  Once on the page, enter LAST NAME ONLY to bring up your registration details.

If you "opted out" of having your registration details shown on the confirmation page at the time you registered, you will be unable to view your information.  To opt back in, email sally@bsim.org.

Entry Confirmation Button 

RWC confirmation

Charity Partner Entries 
A limited number of charity entries will be available at a higher price and/or with a fund-raising element included.  Click HERE for details on our charity partnership program. 

Boston 2 Big Sur Challenge 

  • The Challenge is open to 370 participants on a first-come, first-served basis.  To register on October 1 you MUST be registered for Boston or be able to provide proof of a guaranteed complimentary Boston entry.  Anyone entering B2B who is not registered for Boston will have his/her entry voided and the entry fee refunded.  Once these slots have sold out we will take a wait list of no more than 50 people.  If this situation occurs, and you wish to be on the wait list, email sally@bsim.org.
  • 30 additional slots will be reserved for those planning on entering Boston as a charity runner.  Registration for these slots will open on a first-come, first-served basis once Boston's charity registration process is complete. This date will most likely be in early 2015. 
  • For more information on B2B, click HERE.

Entry Fees 
Most entry fees are unchanged from 2014.  Click HERE for a complete list of fees for all events.

If you experience a problem registering online, contact Active.com at 877.228.4881.  For other registration concerns or questions, email sally@bsim.org.

As part of our green initiatives we do not offer a paper entry form.  If you wish to pay by check or money order, mail a check for the amount of the entry plus a $10 administrative fee to:
P.O. Box 222620
Carmel, CA 93922-2620

Include your email address.  Once the check is received we will email you a coupon code that will allow you to register online at no further charge.

Before registering, please review the course time limit for the Marathon by clicking HERE.