Showing 6 events within 50 km in the next 30 days.
Muddy Dash is not your average mud run! Get ready for up to 3 Miles of messy mayhem. You and your friends/family can expect to run, walk, crawl, wade, slip, slide, and scream with excitement as Muddy Dash gets you fabulously filthy. We’re consistently striving for innovation and excitement in our obstacles, so there’s always a chance you’ll see something brand new! From the moment you step off of that start line, until you triumphantly cross the finish, we hope you’re prepared to have the time of your life among so many of your new best friends in the Muddy Dash community.
Event details and schedule
Choose your start time and run with your friends and hundreds of others on this obstacle course!
Get more details on our website so you're ready to conquer YOUR Muddy Dash!
Welcome to the NON-MEMBER registration page is for the MCRRC Groovin' Woodstock 7K XC!
This page may also be used to sign up to volunteer - please see the "volunteer" tab to the left.
This race is part of our free, low-key series for members. Please refer to the "Low-Key Race Entry Procedure" on our website for more information.
Don't miss out on the opportunity to enjoy the beauty of the Dahlgren Railroad Heritage Trail. Sure, these races are held in August. In Virginia. That's the bonus challenge! All runners will receive a tank top or t-shirt (your choice!) and a finisher's medal.
Both race courses are beautiful, scenic out and back courses on a mostly flat, smooth rails to trails course. There are roots and bog boards in sections of the course - use extra caution in these areas.
Cash prizes, great competition, good food, and awesome swag all make this a memorable event. There is a 4-hour time limit for the half marathon and an 8-hour time limit for the 50K - runners and walkers are welcome!
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 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
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.
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 fro 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 western portion of the Perimeter Trail and also adds in the more technical Tilly Trail.
Sport (~20 miles) – the sport course provides a grand tour of the Rosaryville trail system and comes in at about 20 miles in length with about 1,500 feet of elevation change. The sport course highlights the entire Perimeter and Tilly Trails plus a bit.
Expert (~30 miles) – the expert course provides a grand route of the Rosaryville trail system and comes in about about 30 miles in length with about 2,200 feet of elevation change. The expert course highlights two complete loops of the Perimeter and Tilly Trails plus a bit.
All the trails at Rosaryville are largely maintained by volunteers organized by the Mid-Atlantic Off-Road Enthusiasts (MORE). All racers will have the opportunity to donate to the Rosaryville Trail Fund during registration.
Race Day Schedule
Sunday August 30, 2026 (rain date 9/27)
8:00am – Beginner race start
9:00am – Base race start
10:00am – Sport and Expert races start
Race Start Procedures
We are separating each race into wave starts to allow enough space to spread out the field of riders. Each wave will be separated by a few minutes. Exact start times will be based on the number of riders in each class.
Come enjoy this scenic race at Mount Vernon District Park through the trails! The 5k is two laps and the 10k is four laps of the route.
Walkers are welcome to attend this event.