Race 13.1 Durham

Race 13.1 Durham is a half marathon (13.1 miles) held in Durham County, North Carolina, on December 5, 2026. It is organized by Capstone Races and focuses on a single distance. The course passes through urban scenery and several of the city's public parks, alternating lively streets with the green spaces that are characteristic of Durham.

Because there is only one distance, everyone on the start line is preparing for the same effort, which tends to produce a focused field. The half marathon is a good fit if you have finished a 10K and want to step up, or if you are hunting for a late-season personal best on a route that mixes street sections with park paths. A 12-week build works well: three to four runs per week, one weekly long run that gradually climbs to 11 or 12 miles, and one session with some half-marathon-pace running in the last month. Early December in North Carolina is typically cool, which is often ideal for running a strong 13.1.