Saint Marys Lake Trail Series

FEB
27
2027
Trail running at Saint Marys Lake in Leonardtown, MD offering 17K, 34K and 50K on a roughly 10.5-mile loop with two aid stations and a 100-runner field.
Sat 27 Feb 2027
50 kilometers 34 kilometers 17 kilometers

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Saint Marys Lake Trail Series

The event takes place at Saint Marys Lake in Leonardtown, MD, using a loop of approximately 10.5 miles around the lake and into Salem Forest. The series offers multiple distances:

  • 50K
  • 34K
  • 17K

The course is run as one, two, or three laps of the loop. The surface is about 75% single-track (dirt, roots, rock, wooden bridges), 20% forest road, and 5% crushed gravel along the dam. Trail markings will be present and a GPX route file is provided. Mud and wet sections may occur depending on conditions. Each lap includes several small hills totaling about 500 ft of elevation gain and descent.

Two aid stations are used: the main aid station at the park entrance on Camp Cosoma Road (also the event start and finish location) and a second station near the Salem Forest parking area on Indian Bridge Road. The main station is staffed and will offer warm food and drink; the second station may be intermittently staffed, accepts drop bags, and will have food, drink, and a porta potty. Drop bags should be reclaimed after the event and valuables are not recommended.

The park remains open to the public during the event; mountain bikers, walkers, leashed pets, and horseback riders may be on the trails. Day use entry at the main gate is credit-card only, with a fee for vehicles; passholders can obtain a swipe card from the park office for free entry. Parking in grass or along the road is not allowed. The event is limited to 100 participants and refunds are not issued. The event is organized with aid, markings, timing, and food provided for participants. Visit the organization's website for the most recent information.

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