Event Date:April 30, 2023


Registration for the 2023 Boston 2 Big Sur Presented by HOKA category is CLOSED.

Only the fittest (or craziest!) runners ever attempt back-to-back marathons…much less 13 days and 3,000 miles apart! The April 30, 2023 race will mark the 12th presentation of the Boston 2 Big Sur Challenge Presented by HOKA and we hope to welcome 400 of the world’s fittest athletes to participate in two of the world’s greatest marathons. The Boston Marathon is on Monday, April 17, 2023. This program is for runners who have qualified for an entered the 2023 Boston Marathon and want to run the Big Sur Marathon only 13 days later. HOKA is the official sponsor of Boston 2 Big Sur. All B2B participants will receive exclusive gear and other unique, quality items.



Click for Marathon Race Details


2023 Entry Fee: $530

Transfers into this 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 on September 22, 2022. 

Registration Timeline:

Registration for B2B is closed for 2023.

  • To qualify for the Big Sur Marathon B2B Challenge category, you must also be an official entrant in the April 2023 Boston Marathon. You can register for Boston either through your qualifying time, through one of their charity programs, or by invitation. View the Boston Marathon website for all details about registration for the Boston Marathon. There is no official connection between your Boston Marathon registration and the Big Sur Marathon B2B program. B2B registration fees do not cover your Boston entry.

NOTE: If you are registered for B2B and Boston, but do not start or finish at Boston, you are no longer eligible for the B2B Challenge medallion or finisher jacket.


2023 B2B details and amenities include:
  • B2B  Big Sur Marathon entry as a B2B Challenge runner.
  • Exclusive coaching programs presented by HOKA
  • Private Facebook group access
  • A Boston 2 Big Sur long-sleeve  “in training” tech shirt
  • All the great swag offered to all marathon participants including a recycled tech fabric participant shirt and a ceramic, hand-painted finisher’s medallion.
  • Premium finish-line tent with morning drinks and a menu tailored to speed your recovery
  • A Boston 2 Big Sur finisher jacket distributed in the premium tent with the additional B2B ceramic medallion*
  • B2B runners can purchase guest passes for friends and family to join you in the tent. Prices are $40 (ages 11 and older), $25 (ages 4-10) and FREE for children under age 4.
*The pride of being one of the few to undertake this challenge of completing two iconic marathons only 13 days apart in 2023. BSIM will confirm your Boston finish time as well as your Big Sur finish time.


Awards will go to the top three men and women under age 40 and the top three Masters men and women, age 40 and over. Awards are based on combined Boston and Big Sur chip times.

The Awards Ceremony begins at 11:30 AM in the Finish Village.