Naptown Half Marathon & 10K

Naptown Half Marathon & 10K is run in Annapolis, Maryland, on December 14, 2026, along the Chesapeake Bay. Two road formats are on the program, a 10K and a half marathon (13.1 miles), and both give you views over the bay for much of the way as they wind through Anne Arundel County.

Most runners travel here for the half marathon, and a 12- to 16-week build with a weekly long run reaching 11 or 12 miles is the standard preparation, with one steady tempo run a week to lock in race pace. The 10K is the better pick if your fall mileage has been modest or you want a hard effort without a long taper afterward, and it still covers the same shoreline scenery.