Get ready for an exhilarating experience at the Boulder Dash at Pinesburg Quarry on Saturday, October 18, 2025! Set in the scenic surroundings of Williamsport, Washington, this annual event promises a thrilling day filled with adventure and camaraderie. Runners of all levels, from beginners to seasoned athletes, are invited to take part in this unique race that winds through the stunning landscape of a working quarry. Rest assured, the quarry will be non-operational during the event, ensuring a safe and enjoyable experience for everyone. Don’t miss out on this exciting opportunity to challenge yourself while enjoying the beauty of nature!

Martin Marietta at Pinesburg Quarry is proud to host the Annual Boulder Dash at Pinesburg Quarry! This event will be held in and around the Pinesburg Quarry in Williamsport, MD. This event is designed for all levels from beginners to advanced runners. Enjoy a unique race that allows you to run around a working quarry (for safety purposes the quarry will not be operational during the event)!

Course Description: The 1 Mile Fun Run and Family Friendly 5K are on gently rolling roads and packed gravel surfaces around the quarry. For an extra challenge, the 5 Mile race takes you down into both the main quarry and the old quarry. While all races are mostly on packed gravel, be prepared for uneven surfaces and slightly rocky sections.