Starting in the shadow of the Pentagon in Arlington, Virginia, the Marine Corps 50km takes ultrarunners on a journey through some of the most iconic and historic sites in the Washington, D.C. area, adding an ultra-distance challenge to the revered Marine Corps Marathon weekend. The race pushes participants to their limits with a course that extends beyond the marathon distance, winding through the nation's capital and its surrounding areas, offering a blend of urban and parkland scenery. Runners of the 50km event experience not only the physical challenge of an ultra-marathon but also the emotional and inspirational uplift that comes from participating in an event associated with the United States Marine Corps. The finish line, symbolizing achievement, resilience, and honor, welcomes runners with a sense of accomplishment and a shared bond with fellow participants, making the Marine Corps 50km a profoundly memorable experience.