EX2 Adventures: Rosaryville Off-Road Half Marathon and 10K

About This Activity

Due to overwhelming demand for our EX2 and Fountainhead Off-Road Half Marathon and 10K races, we are thrilled to bring the trail running community a third HM and 10K on the super sweet trails of Rosaryville State Park in Upper Marlboro, MD. We expect this race to be just as popular as our other half marathon/10K races, which have sold out for the past several years. So, register early to reserve your spot on the starting line!


Conveniently located right off the Capital Beltway, Rosaryville State Park offers fun and challenging terrain, that is also beginner friendly. The race course is beautiful and winds through mixed hardwood forests and fields. The trails are twisty, relatively smooth, relatively flat and fast, offering perfect terrain for a half marathon at the beginning of the season.

Age Groups

Male and Female for both Half Marathon and 10K: 29-Under, 30-39, 40-49, 50+


For both the Half Marathon and 10K, the top five male and female finishers in each age group will receive awards.

Entry Fee Includes

Fun and challenging course design, limited race entry (450 total), professional race operations, wonderful volunteer support, aid stations, medical support, accurate results, timely posting of results on the EX2 website, plentiful post-race food, electric atmosphere, great music, awards, and colorful t-shirts.

Aid Stations

Water and Gatorade will be provided at aid stations every 1-2.5 miles along the course. Gu and/or powergel is provided at select aid stations.


High-quality Zorrel Z100 t-shirts for men and Next Level ‘boyfriend’ (slim fit) t-shirts for women are distributed at the Fountainhead Off-Road Half Marathon and 10K. Any racer may order either the men’s tee or the women’s tee. All racers that register at least 10 days before the event are guaranteed a t-shirt in their specified size.

Additional Race Info

Please visit www.ex2adventures.com for more information.


Early by 1/23/14: $45 for 10K / $60 for HM
Reg by 3/19/14: $55 for 10K / $70 for HM
Race Day Registration: $65 for 10K / $80 for HM

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