Nine Mile Run Trail is a hiking and biking trail in Allegheny County, Pennsylvania. It is within Regent Square, Squirrel Hill South, Swisshelm Park, and Frick Park. It is two miles long and begins at 755 feet altitude. Traveling the entire trail is 4.1 miles with a total elevation gain of 353 feet. Near the trailhead there is a parking. Along the trail there are woods and a scrub.
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