Bigger than big. The MCM50K is the largest ultramarathon in the country and the only one held entirely in an urban setting. Participants share the start line with the Marine Corps Marathon in Arlington, VA directly adjacent to the Pentagon. The MCM50K begins prior to the MCM and runs the entire MCM course with a 4.87-mile diversion at Mile 4.5 after runners cross the Key Bridge from Virginia into the nation’s capital. In addition to providing an official finish time, the MCM collects timing data for 50K runners at the 26.2 mile mark along the 50K course that can be used as a qualifying marathon finish time.


Registration for events hosted by the MCM Organization has been temporarily halted. This includes Run Amuck, Recon Ruck, Belleau Wood 8K and the Crossroads Challenge. These events are scheduled for June 20, 2020 aboard Marine Corps Base Quantico. The opening of registration for the MCM10K and MCM Kids Run originally slated for April 13 will be delayed. Following a brief period, during which the MCM Organization will review event operations and protocols, registration will reopen. At that time, any procedural changes or updates will be announced.


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.

Start Line

The start of the MCM50K is located on Route 110 in Arlington, VA-the same location as the Marine Corps Marathon. To access the MCM50K start, runners will enter the streening area in Runners Village, located at the Pentagon North Parking lot. After being screened, runners will be directed towards the start line.

The USATF-certified MCM50K course will follow the MCM course across the Key Bridge and divert at mile 4.5 for an out-and-back along Canal Road. There, the MCM50K course rejoins the MCM and continues onto the finish at the Marine Corps War Memorial. The course includes 13 waters points and 11 aid stations.

The MCM50K will start at 7:15 a.m. prior to the MCM that begins at 7:55 a.m.

The MCM50K participants can visit Runners Village prior to the event for the info tent, porta johns, UPS Baggage Drop-off and a screening zone for access to the start area.

Pace Team

The MCM welcomes the Marathon Maniacs Pace Team to provide the valuable service of guiding runners to the finish with a specific time goal. Pace groups will target the following finish times: 4:30, 5:00, 5;30, 6:00 and 6:30.

Details to signup will be available soon.


For on-time arrival based on the new start schedule, 50K participants should utilize alternate means of transportation other than Metro. Runners may reserve hotel space in Crystal City on the MCM Hotel Desk for convenient access to the free shuttle service to Runners Village.

For those driving, free parking is located in Crystal City near the shuttles. Free shuttle service is also available from the Gaylord National Resort.

  • From Crystal City: Shuttles will follow a route from 23rd Street and Crystal Drive in Crystal City to Runners Village in the Pentagon North Parking lot from 4:30-8 a.m.
  • From Gaylord National: From 4:30–6:00 a.m., MCM offers runners-only shuttles from the intersection of Waterfront and St. George to Runners Village at the Pentagon from the Gaylord National Resort, the MCM headquarters hotel at National Harbor. Beginning at 6 a.m., shuttle service will deliver runners to the Eisenhower Metro station (yellow line) until 9:00 a.m.

To exit from the finish area in Rosslyn, runners and spectators may use either the Rosslyn station (blue/orange/silver), located in the Finish Festival, or Arlington Cemetery (blue). The Arlington Cemetery station will not open until 8:30 a.m. on event morning.

Time Limits

The howitzer will fire at 7:15 a.m. officially sounding the start of the MCM50K. The start is situated on Route 110 in Arlington, VA, the same location as the MCM. 50K participants will line up on the Arlington Cemetery side of the road. The MCM50K course will remain open until 3:00 p.m.

Required Maximum Pace: All MCM50K participants must maintain a 12:30 minute-per-mile pace.

There are multiple checkpoints along the 50K course. Runners must reach mile 4.55 in Georgetown on DC-side of the Key Bridge by 8:18 a.m. Runners unable to meet this time requirement will be routed to the MCM course to compete in the 26.2 mile distance.

At Mile 22 of the 50K, participants will reach "the Gauntlet" in Washington, D.C. Those who do not make it through the Gauntlet by 12:33 p.m. will be diverted from the certified course at Independence Avenue to 14th Street and may continue running but will not complete the official distance. These individuals will not be recognized as official finishers.

“Beat the Bridge” -- All MCM50K participants must reach the intersection of 14 and D Streets before the 14th Street Bridge by 1:15 p.m. at Mile 25.

The equivalent of a marathon finish time will be provided to all MCM50K participants. A timing mat will be installed at the 26.2 mark of the 50K course and will capture timing data. This ‘marathon’ finish time has been approved as a qualifying time for Boston should it meet eligibility requirements.

The “Crystal City Gauntlet” must be reached by 1:49 p.m. at Mile 27 or participants will be diverted from the certified course at 12th Street South as it becomes Crystal Drive. If diverted at any of these locations, participants may continue running but will not complete the official course. These individuals will not be recognized as official finishers.

Water Points

WP 1: Eastbound Lee Highway between Wayne and Adams Streets.
50K WP: Canal Road
WP 2: Intersection of M and 33rd Streets, NW, in Georgetown.
WP 3/4: Along Rock Creek and Potomac Parkway at grassy median. Water Point #3 is located in northbound lanes; Water Point #4 is located in southbound lanes.
WP 5/7: Independence Avenue and Ohio Drive SW at West Potomac Park.
WP 6: Ohio Drive SW parking area near the end of Hains Point.
WP 8: At Madison Drive NW and 12th Street NW along the National Mall.
WP 9: At Jefferson Drive SW and 7th Street SW along the National Mall.
WP 10: Near Army-Navy Drive at Eads Street. (Water Point #10 also supports the MCM10K).
WP 11:Along Long Bridge Drive in soccer complex parking lot.
WP 12: At Lady Bird Johnson parking area on Boundary Channel Drive, in the North Pentagon parking area.
Post-MCM: Bottled water from Wegmans and Gatorade will be distributed in the hospitality area.

Food Stations

  • Oranges: west side of Rock Creek Parkway at Thompson's boat house after Virginia Avenue at Mile 14.5 of the 50K. Thanks Wegmans.
  • Honey Stinger Energy Gel: at Ohio Drive before Water Point 6 at the end of Hains Point in East Potomac Park in Mile 17 and near mile 28 in Crystal City.
  • Jelly Belly Sport Beans: at the intersection of Jefferson Dr SW and 4 Street SW along the National Mall to WP 9 before Mile 24. Sport Beans™ jelly beans (gluten free) are formulated with electrolytes, carbohydrates and vitamins B and C to sustain and replenish energy during intense exercise. This revolutionary product maximizes performance and ensures ideal portion control, with four delicious flavors that will keep you going.

Aid Stations

Location 1: Canal Road

After location one, the MCM50K will travel through the MCM aid stations:

AS 1: Francis Scott Key Park at the corner of Key Bridge and M Street
AS 2/3: Along Rock Creek and Potomac Parkway below Waterside Drive
AS 4/6: Independence Ave SW and Ohio Drive SW in West Potomac Park at the Ericksson Memorial
AS 5: Ohio and Buckeye Drive SW underneath the I395 overpass (Case Bridge) on the Washington Channel side of East Potomac Park
AS 7: East of the intersection of 14th Street NW and Madison Drive NW, in front of the Smithsonian National Museum of American History
AS 8: Jefferson Drive SW and 12th Street SW at the Department of Agriculture
AS 9: Eads Street Parking lot at Army/Navy Drive
AS 10: Parking lot of Public Storage on West side of Long Bridge North of 6th Street S

Medical Tents are located near the finish on the Marine Corps War Memorial.

  • Medical Information tent is located at the intersection of Lynn Street and Fairfax Drive. Medical personnel will track runners and record medical data to ensure timely updates are available to families of runners receiving assistance.

UPS Drop Off

Runners must use the clear plastic bag provided at Packet Pick-up. UPS baggage trucks will be located in Runners Village. A UPS Baggage Sticker will be available for every MCM50K runner. The sticker, which is attached to the runners bib, features the runner's bib number and the assigned UPS truck to be utilized for baggage drop off and pick up on event day.

On event day, runners affix the sticker to a bag to facilitate easy identification. Do not deposit valuable items. Neither the MCM nor UPS is liable for lost items.

After the run, MCM50K participants may pick up a bag in the Finish Festival. UPS will be situated at the intersection of Lynn Street and Wilson Boulevard.


The MCM50K features a wide variety of musical entertainment throughout the course. From the first mile to the last, runners and spectators are treated to inspiring artists, motivating music and exciting entertainment.

Finish Line

The MCM50K shares the finish line with the MCM and MCM10K. 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.

After taking a victory photo in front of the Memorial with MarathonFoto, MCM50K finishers receive a hospitality box, Fyffes bananas, bottled water from Wegmans and Gatorade.

Mission Preparation MCM50K Planning

Packet Pick-up

With hundreds of vendor booths, Packet Pick-up, interactive displays, giveaways and more, the Health & Fitness Expo presented by Cigna is the first stop for runners.

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Hotels are available at special rates for MCM runners and spectators. Book early for the best deal.

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Finish Festival

Mission Accomplished! MCM finishers celebrate with supporters in downtown Rosslyn amidst music, fun, giveaways and more.

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Strategic Approach MCM50K Readiness

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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