Recognized for impeccable organization on an iconic course managed by the U.S. Marines in Arlington, VA, and the nation’s capital, the Marine Corps Marathon is now the third largest marathon in the United States and remains one of the largest in the world.

Welcome to the 13th annual Patapsco Valley 50k AND the 5th running of the Patapsco Valley 25k! We are excited to have our race headquarters back at CCBC-Catonsville!

The Marine Corps Marathon 8K brings the energy and tradition of MCM Weekend to a shorter, fast-paced distance. Perfect for runners of all levels, participants will experience scenic views, on-course Marine support, and the pride of earning an official MCM Weekend finisher medal while running in the spirit of Semper Fi.

Located in Reston, VA, Lake Fairfax has a beautiful lake and an awesome trail network. The courses hit the best singletrack and include some great views of the lake.

Pumkin Spice & Everything Nice! Gather, Run, & Celebrate the Colors of Fall at the Fall Classic 10K!

The 42nd Annual Army Ten-Miler Race Date will be held on October 11, 2026, at the Pentagon, Washington, D.C. Taking place on an early October Sunday morning, thousands of runners travel from around the world to visit Washington, D.C. to win the top spot in the Army's Race!

Get ready to channel your inner lumberjack or lumberjill at the Plaid to the Bone 10K — the coziest, crunchiest, most flannel-filled race of the fall!

Join us for a hilly 5K mostly along the Matthew Henson Trail between Georiga Avenue and Layhill Road, with brief stretches at the start and finish along Rippling Brook Drive and several wooden bridge crossings.

Join us on October 3, 2026, as we work to raise $18,000 to assist local families facing financial hardship. Every year, the St. Katherine Drexel Conference helps approximately 600 individuals and families, providing critical assistance when it is needed most.

The National Capital 20 Miler is Washington, DC’s premier fall marathon tune-up race. Taking place on the C&O Towpath, the race offers runners a flat, fast out-and-back course with water and nutrition support at regular intervals. All runners receive race swag. 

This outdoor, fun and healthy gathering is to promote community engagement and voter participation in Montgomery County and our beautiful State of Maryland. Come on out, enjoy some great music and meet your Maryland elected officials!  Don't miss out.  Register to run or walk today!  All athletic levels are welcome.

Our scenic 5k route is along Sligo Creek Parkway and Sligo Creek Trail. The route is stroller-friendly, and walkers are welcome to attend.

RUN! GEEK! RUN! is an annual, charity 5K run/walk race, on a USATF certified, flat and fast course. We also have a 1-mile Fun Run option. Truly a community event - hosted by an Alexandria nonprofit, supported by local schools and organizations, and benefiting a different Alexandria-based non-profit each year. Our 2026 beneficiary is the Scholarship Fund of Alexandria.

Jog N' Jam is an inspiring event dedicated to promoting mental health and wellness. Run (or walk) a 2.5K, 5K, or 10K.

The Columbia Classic 10K & 5K returns to Downtown Columbia, MD with an exciting new race experience for 2026. This year's updated course takes runners on a fast and scenic route around the iconic Columbia Mall, showcasing the vibrant heart of Downtown Columbia while delivering a fun and accessible challenge for athletes of all abilities.

The race begins just before sunrise, at 6:45 AM, on a scenic Montgomery County road and quickly transitions into a tour of beautiful Rock Creek Park. As you run through the park, you’ll experience the sun rising through the tree cover and enjoy the sights and sounds of nature.

Join Food for Others as we race against hunger at our annual 5K & Fun Run!

Your race registration supports Food for Others, a food bank and pantry in Fairfax County who serves as one of the largest providers of free groceries in Northern Virginia.

Help the Howard County Police Foundation raise funds to support the department with special needs and programs not met through the annual budget process, including youth programs, special equipment and scholarships.

The 5K race will be held at Calleva Farm in Dickerson. The course offers views of horses, hayfields and a big, red barn – you can’t get more country than that in Montgomery County! And breaking a long-standing MCRRC tradition, the race features a downhill finish. The location is in the far west end of the county, so please be sure to map it and allow extra travel time to get there.

Mark your calendars for the 13th annual Norma E. Boyd 5K Race for Education on Sunday, September 20, 2026. This event, hosted by the Xi Omega Chapter of Alpha Kappa Alpha Sorority, Inc.® in collaboration with the Pearl and Ivy Educational Foundation, Inc. (PIEF), honors the 40th anniversary of Alpha Kappa Alpha Sorority, Inc.® founder Norma E. Boyd’s passing.

The 17th annual Annapolis RUN for The Light House provides scenic half-marathon and 5k routes along the trails of Quiet Waters Park and through the beautiful Chesapeake Bay-front community of Hillsmere Shores. This race event is unlike any other in the greater Annapolis area!

Held for the past 40 years, the Walk to End HIV is Whitman-Walker’s signature fundraiser that calls on thousands to strap up their shoes and walk or run to support WW’s mission of providing dependable, high-quality, comprehensive and accessible health care to those living with or affected by HIV/AIDS.

Since 1994, the Kensington 8K Race has been a favorite DC area fall race - a fun, fast event with beauty, challenge, and excitement. Run with us this year on Saturday, September 19, 2026!

Come out and enjoy our 5K in Bluemont Park in Arlington, VA. We invite you to support our upcoming 5th annual Reach for the Stars 5K Run/Walk, where funds raised will directly contribute to our efforts in empowering Latina students.

Take on a scenic riverside run in the heart of Anacostia National Park, following a smooth and uninterrupted out-and-back route along the Anacostia River. With wide, open stretches and the road fully closed on Anacostia Drive, this event offers a calm and focused race environment from start to finish.

As the United States celebrates 250 years, lace up for a 10-miler or 5K that brings community, fitness, and historic perspective together.

Enjoy nature at Lums Pond State Park. Starting and finishing at Area 1, the Bear Trail Half Marathon & 10K uses portions of the Little Jersey and Swamp Forest trails. The course is a mix of single track, wide trails and is relatively flat in elevation. This race is appropriate for all level runners including beginners.