The MCM50K will be a virtual-only event in 2021. Runners must complete the ultra-distance between October 1 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 2021 finisher medal. Participants will be required to submit proof of performance for official finisher results.


Registration for the 2021 MCM50K is open and offers a virtual option.


Virtual Info

Virtual participants are encouraged to post photos on social media using #VirtuallyUnstoppable. Share the route and showcase your virtual finish line and post-run celebration.

Virtual run dates begin October 1 and runners must complete their virtual distance by November 10, 2021.

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Ambitious runners can register for three MCM Weekend events (virtual MCM, MCM50K and MCM10K) to complete the Trifecta. This challenge will reward finishers with a stunning challenge coin in addition to the corresponding finisher medals.

The MCM50K shares the finish line with the MCM. Adjacent to the Marine Corps War Memorial, runners will pass under the famed MCM arch to receive a finisher medal from an awaiting Marine Corps lieutenant.

RRCA Championship

The Road Runners Club of America (RRCA) has awarded the District of Columbia Ultra Championship to the MCM50K for 2021. The 50-kilometer run will take place during the Marine Corps Marathon (MCM) Weekend on October 31, 2021 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 2021 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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