_ The 2018 River Valley Run Trail Half Marathon:
Experience the excitement and challenge of a premier Maryland Half Marathon Trail Run. Our goal is for this to be one of the best half marathons in Maryland and beyond, giving you an extreme running challenge and endurance trail race that will push your limits! Running through River Valley Ranch's scenic, wooded property with gorgeous hills, valleys, and the beautiful Gunpowder river will be an epic 13.1 miles to remember!
Event details and schedule