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Rosaryville Half Marathon and 10K Trail Run

📅 March 27, 2027 (estimated date)📍 Upper Marlboro · United States

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (March 28, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

3.6 mi6.7 mi13.5 mi

About

The Rosaryville Half Marathon and 10K Trail Run takes place in Upper Marlboro, Maryland, in late March, at Rosaryville State Park. It offers a day of trail running through mixed hardwood forest and open fields, suitable for runners of all levels.

The half marathon and a 5K start at 9:00 a.m., and the 10K starts at 10:00 a.m. The courses are listed at about 13.5 miles, 6.7 miles and 3.6 miles, so each is somewhat longer than its name suggests, and it is worth checking the official course information. Participants can choose from different race options, enjoy the natural beauty of the park and support a local partner charity. Mid-Atlantic trails are often muddy in late March, so trail shoes are wise.

D-160

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