Registration

Registration for the 2027 Marine Corps 17.75K will open January 1st!

All participants earn a unique finisher medal and a short sleeve technical shirt. All live finishers receive an Access Granted link guaranteeing entry into the 52nd Marine Corps Marathon. Participants registering for the MCM must be 14 years or older on event day.

Registration and any associated purchases are final and not refundable by the MCM Organization or any of its partners. Any updates or changes to your registration can be made by logging into your participant account or emailing MCM Customer Service.

Participant Shirt Size Guides

Refundable Registration

Refundable registrations are now available through TEAK. Your registration can be protected during the registration process or in your account up to five (5) days after your registration has been confirmed. To request a refund, you will need to navigate to your participant account and open your registration. Under registration information, you will see a “Refundable Registration” box if you purchased it. Within this box, you will have a link to “Request a Refund”.

All refund requests require proof of an event or booking purchase and supporting documentation for the refund reason that prevented the person from attending. Required documentation is determined by the reason you were unable to attend the event. Additional details about specific required documentation can be found during the Refund Request flow or within your protection PDF received after the purchase was completed.

You have 30 days from your event/experience to request a refund and 90 days after that to provide the required supporting documentation.

Participants who are concerned they may not be able to participate in a Marine Corps Marathon Organization event can pay an additional service fee (14% of all items purchased, excluding event processing fees) for a 100% refund. The service fee will be the only amount not refunded. Refundable registration must be purchased as part of the registration process. Participants cannot go back and purchase once registration is complete.

For more information on the perils covered by refundable registration visit: https://refundable.me/haku/ This link will open in a new tab.

Please note, refundable registration does not cover the following:

• If the participant does not attend the event because they are concerned about the coronavirus (COVID-19) or are self-isolating without a positive COVID-19 test or other non-COVID-19 communicable diseases leading to quarantines or travel restrictions.
• If event organizers cancel the race.
• Processing fees associated with items (entry fee, ancillary products, etc.) purchased during the application process.

Transfers

The Marine Corps Marathon Organization does not permit transfers or deferrals for the 2026 events. All registrations are final and may not be transferred to another individual or postponed to a future year.

Please note: Any official deferments granted from the 2025 season will be honored for participation in 2026.