Cranky Monkey Mountain Bike Race

About this race

Cranky Monkey Mountain Bike Race The Cranky Monkey heads to Rosaryville State Park in 2026! Join us for an awesome day of bike racing and community. Race Date Sunday August 30, 2026 (rain date 9/27) Race Courses 4 XC courses varying in length from about 6 miles to over 30 miles. See course notes below for course information and maps. Beginner : 5.6ish miles Base : 9ish miles Sport : 20ish miles Expert : 30ish miles About Rosaryville State Park Rosaryville State Park in Upper Marlboro, MD is an absolute gem and one of the most beginner friendly and fun parks in our area for mountain biking. We’ve been hosting races at Rosaryville for over 15 years and are excited to bring back the Cranky Monkey to this very special park. We’ve designed four courses for this race – beginner, base, sport, and expert. They are each described below. All courses start and end at the day use pavilions near the power lines that traverse the park. The start of the race is designed to allow for an exciting, but not overly crowded race start. Course Descriptions Beginner (~5.6 miles): the beginner course is just shy of 6 miles long with about 400 feet of elevation change. It is designed to provide a safe and achievable entrance to mountain bike racing for participants of a variety of ages. The course highlights the western portion of the Perimeter Trail, which is the main multi-use trail in the park. Base (~9 miles): the base course is a step up from the beginner course both in length and difficulty. It is about 9 miles in length with 600 feet of elevation change. The base course also highlights the w…