Coronavirus (COVID-19) Update. July 20, 2020. The MCM50K will be a virtual-only event in 2020. Runners must complete the ultra-distance between September 27 through November 10 (Marine Corps Birthday). Runners across the country and around the world can bring the spirit of the MCM50K to sidewalks, trails or favorite local routes. All runners receive by mail the official shirt, bib and the stunning 2020 finisher medal. Participants will be required to submit proof of performance for official finisher results.


For currently registered runners who opt to run virtually, the guidance is to defer the entry to 2021, 2022 or 2023. Runners who defer to 2021 are eligible to re-register for the 2020 virtual event (at fees detailed below).

More Details

New! Virtual

A limited number of entries will be made available to the public on July 2 at noon eastern time for a $45 registration fee. Virtual runners will receive the MCM50K participant shirt, commemorative bib and corresponding finisher medal. Virtual events must be completed between September 27-November 10 (Marine Corps Birthday). Runners will be required to upload results data. More information coming soon.

Register Here

New! Trifecta

For the first time in MCM history, ambitious runners can register for three MCM Weekend events through a combination of virtual or live MCM and MCM50K and the virtual MCM10K to complete the Trifecta. This once-in-a-lifetime challenge will reward finishers with a stunning challenge coin in addition to the corresponding finisher medals.

Registration for the virtual MCM and MCM50K events remain open and cost $45 per entry. As MCM10K registration is closed, only those participants who are already registered for the MCM10K may still register to participate in the Trifecta by signing up for the MCM and MCM50K.

Register Here


After registering for the MCM50K, some runners unfortunately are unable to participate. These runners may opt to transfer their entry to a non-registered runner through the Transfer Program. The MCMO doesn't assist in the identification of individuals to receive a transfer. Runners often find transfer partners on the MCM Facebook page.

Runners currently registered for the MCM50K may transfer an entry to another runner. There is a $50 transfer fee (plus processing) associated with transferring between individuals. Either individual involved in the transfer may pay this fee, it is the current owners choice.

When transferring an entry, runners do not receive a refund on registration fees. Any such monetary transactions must be handled directly between the transferring runners.

MCM50K transfer program, between runners, is currently open and remain open through September 15.

Initiating Transfer

To execute the transfer, please follow these steps:

  1. Login to your Haku account:
  2. Click 'Your Regsitration'
  3. Click 'Edit Registration'
  4. Scroll and click 'Registration Options' (bottom right size of page)
  5. Click 'Transfer'
  6. Enter the name and email address of the person you wish to transfer registration to
  7. Select the option to pay the transfer fee or to pass on the transfer fee to the new runner, click 'send.' At this time, the original runner is removed from the event and placed in the transfer file.

Receiving Transfer

The new runner will receive an email with a customized link to complete the transfer.

RRCA Championship

The Road Runners Club of America (RRCA) has awarded the District of Columbia Ultra Championship to the MCM50K for 2020. The 50-kilometer run will take place during the Marine Corps Marathon (MCM) Weekend on October 25, 2020 along with the MCM10K and the full marathon.

The RRCA Championship Event Series is the largest grassroots-organized running series in the U.S. with over 200 races participating that attract nearly 300,000 participants. The designation of the MCM50K as the RRCA District of Columbia Ultra Championship for 2020 means that runners competing in the event will be eligible for not only MCM age group and overall awards, but also RRCA honors.


Run for a Cause with MCM Charity Partners

Choose an organization that resonates with you and click the links to connect directly with the organization and their representatives to find out how you can add purpose to your miles. Charities may have entries to the MCM, MCM10K and even the MCM50K.

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MCM50K Game Changer

Since the recent announcement of the inaugural MCM50K, event organizers have received approval for a revised course that has resulted in multiple favorable upgrades.

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