North Parking for Carderock Cliffs, Potomac MD
Sunday, December 14th, 2025
The lowest-priced half-marathon in America! Still a full 13.1 miles and full-service on quality and support!
This is race #2 of the DCRR Snowball Series. In past years, it's been the Gar Williams Half Marathon: now it honors all the Club's founders.
Out-and-back along C&O Canal Towpath. USATF certified course, click here for map. The course will be re-certified before race day.
Online registration only.
Timing and results will be compiled on a real-time basis and friends and family will be able to track runners throughout the race via social media.
We will provide a link for live results in our final instructions to runners.
In the event the race is canceled, pre-paid non-members will receive a credit to be applied to a future Snowball Series race.
Carderock Recreation Area (not Park), Carderock, MD.
We will have a great breakfast spread post race, including bagels, cream cheese, Nutella, PB&J, hot chocolate, coffee, tea, Gatorade, bananas, and more.
Come-on people, it's a $10 race... No, there are no t-shirts or medals.
Take the Capital Beltway (I-495), to the Clara Barton Parkway headed west, outside the beltway. Make a right on the first exit which is for both Carderock and the Naval Surface Warfare Center (Carderock Division). Turn left at the stop sign at the top of the ramp to cross the parkway. After passing under the canal, turn right and proceed to the last parking lot. If it’s full, park in one of the other lots and walk back to our registration area.
We need many volunteers to help coordinate the race events. Please "pay it forward" by helping if you’re not running, or have a friend or relative volunteer. Remember, this counts as your Snowball Series volunteer requirement.
For more details, visit the official race page.
Course Map
Suggested Races
Find The Run Newsletter
Limited-edition FTR Merch