Facility Overview

Carderock Recreation Area Parking Lot 2 (commonly referenced as Lot B or the South Pavilion Lot) is a dedicated open-air surface parking area nestled within the scenic Chesapeake and Ohio Canal National Historical Park in Potomac, Montgomery County, Maryland. Situated adjacent to the historic Carderock Picnic Pavilion along the C&O Canal Towpath, this paved, ground-level parking lot provides direct vehicle access to one of the Capital Region's premier outdoor recreation destinations. The lot features standard perpendicular marked parking stalls arranged along two-way drive aisles, bordered by mature woodland shade.

In terms of vehicle suitability, the lot easily accommodates standard passenger sedans, minivans, crossover vehicles, and full-size SUVs or pickup trucks. Because it is an open surface lot, parking stalls enjoy completely unobstructed vertical headroom once inside. However, approaching drivers must pass through a single-lane concrete box-culvert underpass directly underneath the historic canal bed, which imposes a vertical clearance limit of approximately 11 to 12 feet. Taller commercial semi-trucks, high-profile motorhomes, and vehicles loaded with oversized rooftop cargo should avoid this underpass, while regular passenger vehicles and roof-racked adventure cars can navigate it with ease.

Prime Location & Nearby Attractions

Parking Lot 2 is situated within immediate walking distance of top natural, geological, and historical landmarks along the Potomac River corridor:

• Carderock Recreation Area Pavilion: Located less than a 2-minute walk (under 150 feet) from the parking bays, this historic stone-and-timber open-air pavilion hosts community picnics, corporate events, and family reunions for up to 200 guests.
• Carderock Rock Climbing Cliffs: A 5-minute walk westward along forested footpaths leads to the famous Carderock bluffs, a renowned local hotspot for top-rope rock climbing and bouldering overlooking the Potomac River Gorge.
• C&O Canal Towpath: Located roughly 100 yards from the lot, providing cyclists, gravel riders, runners, and hikers with uninterrupted off-road travel spanning from Georgetown to Cumberland, Maryland.
• Billy Goat Trail (Section C & Section B): The southern trailheads for Section C and Section B of the acclaimed Billy Goat Trail network are within easy walking distance, offering rugged terrain, river views, and natural rock scrambles.
• Marsden Tract Campground: A primitive, walk-in backcountry campsite situated approximately 0.5 miles downstream along the towpath.
• Great Falls Park & Great Falls Tavern: Located just 3 miles upstream via MacArthur Boulevard or the towpath, showcasing the dramatic cataracts and historic lockhouses of the Potomac.
• Glen Echo Park & Clara Barton NHS: Located 3.5 miles downriver, offering historic carousel rides, arts workshops, and cultural theater productions.

Access, Navigation & Transit Connectivity

Arriving at Carderock Parking Lot 2 is straightforward from the Capital Beltway (I-495). Drivers take Exit 41 onto the Clara Barton Parkway, continue westbound for approximately one mile, and take the clearly signed Carderock exit opposite the Naval Surface Warfare Center (David Taylor Model Basin). At the stop sign, turn onto the park access road, cross the Clara Barton Parkway overpass, and proceed through the single-lane vehicular tunnel beneath the canal towpath. After exiting the tunnel, turn right at the stop sign; Lot 2 is immediately accessible on the left and straight ahead.

Due to its secluded park setting along the riverbank, there are no heavy rail stations within immediate walking distance. However, the Montgomery County Ride On Bus serves nearby stops along MacArthur Boulevard. Regional commuters and day visitors can connect to the Washington Metro Red Line via the Bethesda or Friendship Heights stations, located roughly 15 to 20 minutes away by car or rideshare. Egress back onto the Clara Barton Parkway provides swift access to Northern Virginia across the American Legion Memorial Bridge or into downtown Washington, D.C. via Canal Road.

Facility Amenities & Key Features

• Free National Park Access: No day-use parking fees or standard NPS vehicle admission passes required for parking at Carderock.
• Spacious Surface Parking: Marked asphalt bays with clear drive lanes designed for seamless maneuvering.
• Accessible Parking: Designated ADA-compliant accessible spaces positioned closest to the paved pavilion walkway and trail connection.
• Sanitation Facilities: On-site portable restrooms and seasonal comfort stations located directly adjacent to Lot 2.
• Recreational Infrastructure: Direct access to shaded picnic tables, charcoal cooking grills, a stone hearth, a public softball diamond, and horseshoe pits.
• Trailhead Kiosk: Informational park boards with trail maps, safety notices, and park ranger regulations posted on-site.
• Eco-Friendly Environment: Operates under the National Park Service "Leave No Trace" and "Trash-Free Park" pack-it-in, pack-it-out standard.

Ideal For

• Trail Hikers & Trail Runners: Exploring the scenic loops along Billy Goat Trail Section C and the canal corridor.
• Rock Climbers: Accessing top-rope routes and boulder problems along the Carderock cliff walls.
• Towpath Cyclists & Bikepackers: Staging long rides northwest toward Great Falls or southeast into Georgetown and the National Mall.
• Group Gatherings & Picnickers: Attending private or permitted events at the historic Carderock Pavilion.
• Anglers & Kayakers: Transporting lightweight fishing gear or personal watercraft down to the Potomac River shoreline.

Visitor & Driver Tips

Because Carderock is one of the few free public access points along the lower C&O Canal, parking spaces fill up rapidly on sunny spring, summer, and autumn weekends. Plan to arrive before 9:30 AM or in the late afternoon after 3:30 PM to avoid circling for a space. When approaching through the single-lane canal tunnel, always proceed slowly and yield courteously to outbound vehicles already inside the underpass. Cell service along the river bluffs can occasionally fluctuate, so downloading offline trail maps in advance is strongly recommended. Finally, remember that Carderock operates as a trash-free park without permanent refuse cans along trails; bring your own litter bags, secure all personal belongings out of view inside your trunk, and lock your vehicle before setting out on your hike.