Pittsburgh, PA

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Mentions Pittsburgh, PA (less relevant)

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Great Allegheny Passage Trail is a 150 mile crushed limestone trail for biking, and hiking that links Pittsburgh, PA to Cumberland, MD and the 184.5 mile C&O Canal Trail that connects to Washington, DC. That makes 334.5 miles of safe travel without threat from motorized vehicles.
Despite rising to an elevation of 2392 feet at the eastern continental divide in Larimer Township, PA (Somerset County, PA), the trail built on former railroad beds has an average grade of only 2%.

The 150 mile Great Allegheny Passage Trail is a single trail made up of multiple corridors:
Geography
?} Connellsville, PA is located approximately 50 miles southeast of Pittsburgh, PA. Quickest route (approximately 1 hour) to Pittsburgh, PA from the Connellsville, PA is Route 119 north, I-76 west, and I-376 west to downtown Pittsburgh, PA.
History
?} The Fayette Gazette and Union Advertiser appeared in Uniontown, PA on December 5, 1797, and was the second newspaper to be published in western Pennsylvania. The first was the "Pittsburg Gazette" appeared in Pittsburgh, PA on July 26, 1786.