You are not able to defer your 2023 entry fee to 2024. You do not need to inform us of your cancellation. If you do cancel, you may take the amount of your entry fee as a charitable donation on your income tax return. The Big Sur International Marathon is a 501(c)(3) non-profit organization.


During the registration process, you have the opportunity to add refund protection offered from Protect Group. This enables you to receive a refund for the race if you are unable to attend the event. Please note: you CANNOT retroactively add refund protection. If you select this option, refunds are given by Protect Group. The race is not involved in the refund process in any way. Refunds will be given on all cart items at the time of your initial checkout (items added at a later date will not be refunded). Please see HERE for approved refund circumstances.


Entrants in the April 30, 2023 race will have the opportunity to transfer their race registration to another individual between February 1, 2023 and February 28, 2023. Click here for detailed instructions on how to transfer your registration.

The transfer fess are as follows:

  • $30 for the Marathon, 21 Miler, 11 Miler
  • $20 for the 12K
  • $10 for the 5K


A limited number of category changes (upgrades/downgrades) will be available from February 1, 2023 – February 28, 2023. If slots are available in your desired race category (distance), you will be able to initiate the category change from your haku participant account for a $20 administrative fee. Click here for detailed instructions on how to change categories. If the price of the new race category is higher than the original category, you will also pay the price difference. If the price in the new category is lower than your original category, there is no credit provided. The inventory of available slots will fluctuate based on the category changes of other participants, so check back often.

Please note: Transfers into the Boston 2 Big Sur category are not allowed. If you’d like to run Boston to Big Sur, please register in this category once it is open to participants, do not enter the random drawing.

Deferrals to future race years are not permitted.