Mile 84.4 - On the detour around Big Slackwater

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Williamsport, Maryland highlights this section of the towpath. The town was a major inland port during the canal heydays. Today, the town is mostly just an exit off Interstate 81. However, it still supports a pretty sizable residential population and several small businesses. As a result, a number of convenience marts and restaurants are available here.

Just north of Williamsport lies the Conococheague (Con-ni-ca-jig) Aqueduct. In 1920, the upstream wall of the aqueduct collapsed after being struck by a canal barge. The barge crashed through the opening and remained stuck in the creek until 1936, when a flood washed it down the Potomac. A wooden wall was hastily reconstructed in order to get the aqueduct back in service. This fix remained in place until the canal ceased operation 4 years later in 1924.

Mile 84 through 88 is the only impassable section along towpath. As a result, a bicycle detour has been established between Dam #4 and McMahons Mill. After 85 miles of towpath riding, this detour is actually a very pleasant diversion. Note that the detour signs are typically missing or obscured, so watch for the landmarks. Also, be advised that the Park Service may often extend this detour due to flooding and rock slides (see map).

There are two really nice RV Campgrounds located just southeast of Williamsport. If you would like to "Park and Ride", then this makes a great starting point. You can park your RV here and then spend one or more days exploring the towpath. For RVers wishing do the entire canal, you can spend a few days covering one half of the towpath, return to your RV for an evening or two, and then spend a few more days exploring the other half.


Access Points: From I-81 in Maryland:

Mile 95.0 - Dam #4 Recreation Area: Mile 99.4 - Williamsport Visitor Center:

Access Points: From Westbound I-70 in Maryland:

Mile 106.6 - Dam #5:

Towpath Map - Mile 82 thru 106

MileNameInfo Food Water Campsite/Restrooms Lodging Access Point
81.0 Taylors Landing Boat Ramp Access to Antietam BattlefieldX
82.5 Big Woods H/B (map) 1.5 miles from vehicle access at mile 81.0XX
84.4 Dam #4 (Bike Detour) Use on road detour.X
84.4 Downsville General Store (map) 301.223.6401: Small Deli located in Downsville, MD. About 1 mile off the detour via Dam Number 4 roadXX
88.1 McMahons Mill (Bike Detour) RV and Tent CampingXX
90.9 Opequon Junction H/B (map) Remote Campsite - No vehicle accessXX
94.0 Falling Waters Confederate Army crossed here after the Battle of Gettysburg.
95.2 Cumberland Valley H/B (map) Remote Campsite - No vehicle accessXX
98.5 I-81 Overpass
99.4 Williamsport Visitor Center 301.582.0813: National Park Service Visitor Center. Great displays inside the Cushwa building.X
99.4 Red Roof Inn (map) 301.582.3500: Williamsport, MD - Located about 1 Mile from the towpath, along Potomac Street (Route 11)X
99.4 Jellystone Park (map) 301.223.7117: Private Campground - Full Service RV and Cabins. Located 2 Miles south of Williamsport along Route 68. Showers, pool, camp store.X
99.4 Hagerstown KOA (map) 301.223.7571 : Private Campground - Full Service RV and Cabins. Located 3 Miles north of Williamsport along Kemp Mill Rd. Showers, pool, camp store.X
99.4 River City Cycles (map) 301.223.6733: Bike shop at 22 N Conococheague St, just a few block off the canal at the top of the hill.
99.4 Tony's New York Pizza (map) 301.223.6266: Great place to load up on carbs. Corner of Salisbury and Conococheague StreetsX
99.4 Byers Market (map) 301.223.7474: Market and deli. 18 N Conococheague StX
99.4 Desert Rose Cafe (map) 301.224.6400: NEW for 2008. Swing by for a cup of soup, a healthy sandwich or salad and perhaps an espresso or smoothy. 21 N Conococheague StreetX
99.5 Conococheague Aqueduct Pronounced Con-ni-ca-jig
101.2 Jordan Junction H/B (map) 1.9 miles from vehicle access at mile 99.3XX
106.6 Feeder Dam #5 Access via Dam #5 Road - Parking Area.X