western: 1,066 feet (325 m); eastern 1,786 feet (544 m)
Highest point
Eastern Continental Divide just east of Deal, Pennsylvania, 2,392 ft (729 m)
Lowest point
east end: 606 feet (185 m) at Cumberland, Maryland; west end: 720 feet (220 m) at Point State Park, Pittsburgh, Pennsylvania
Grade
2% maximum
Difficulty
Easy
Hazards
Severe weather, Traffic (Pittsburgh)
Surface
Crushed limestone
Right of way
Baltimore and Ohio Railroad Pittsburgh and Lake Erie Railroad Union Railroad Western Maryland Railway
Trail map
Legend
147.7 mi
237.7 km
Point State Park
145.3 mi
233.8 km
Hot Metal Bridge
144.2 mi
232.1 km
Pittsburgh
140.5 mi
226.1 km
Homestead
134.1 mi
215.8 km
Riverton Bridge
129.2 mi
207.9 km
Dead Man's Hollow
to Montour Trail
132.5 mi
213.2 km
McKeesport
128.2 mi
206.3 km
Boston
122.6 mi
197.3 km
Dravo Cemetery
114.1 mi
183.6 km
West Newton
102.2 mi
164.5 km
Perryopolis
88.8 mi
142.9 km
Connellsville
to Laurel Highlands Hiking Trail
71.9 mi
115.7 km
Ohiopyle
61.6 mi
99.1 km
Confluence
52.1 mi
83.8 km
Pinkerton High Bridge
51.9 mi
83.5 km
Pinkerton Tunnel
51.7 mi
83.2 km
Pinkerton Low Bridge
43.8 mi
70.5 km
Rockwood
36.5 mi
58.7 km
Garrett
33.7 mi
54.2 km
Salisbury Viaduct
31.9 mi
51.3 km
Meyersdale
30.3 mi
48.8 km
Bollman Bridge
29.8 mi
48 km
Keystone Viaduct
23.7 mi
38.1 km
Eastern Continental Divide
22.0 mi
35.4 km
Big Savage Tunnel
20.5 mi
33 km
Mason–Dixon line
PA
MD
17.9 mi
28.8 km
Borden Tunnel
15.5 mi
24.9 km
Frostburg
6.5 mi
10.5 km
Brush Tunnel
0 mi
Cumberland
Chesapeake and Ohio Canal Towpath
to Washington, D.C.
This diagram:
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The Great Allegheny Passage (GAP) is a 150-mile (240 km) rail trail between Pittsburgh, Pennsylvania and Cumberland, Maryland. Together with the C&O Canal towpath, the GAP is part of a 335 mi (539 km) route between Pittsburgh and Washington, D.C., that is popular with through hikers and cyclists.
^"Meeting Minutes for October 17, 2013, and Report to SCOH October 18, 2013 (Addendum October 28, 2013)" (PDF). Denver, Colorado: Special Committee on U.S. Route Numbering, American Association of State Highway and Transportation Officials. October 28, 2013. Archived from the original (PDF) on May 5, 2014. Retrieved June 9, 2014.
^"BikeHacks - Your Home for Everything Biking".
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