The Grist Mill Trail is a 5.0 mile long hiking and biking trail located in

Patapsco Valley State Park Patapsco Valley State Park is a Maryland state park extending along of the Patapsco River south and west of the city of Baltimore, Maryland, Baltimore, Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It ...

in the

Baltimore County Baltimore County ( , locally: or ) is the third-most populous county in the U.S. state of Maryland and is part of the Baltimore metropolitan area. Baltimore County (which partially surrounds, though does not include, the independent City of ...

side of the

Patapsco Valley The Patapsco Valley is a small valley surrounding the Patapsco River in central Maryland. The region is known for its historical significance as a major economic and industrial center in the eighteenth and nineteenth centuries. Geography The Pa ...

near

Catonsville, Maryland Catonsville is a census-designated place (CDP) in Baltimore County, Maryland, United States. The population was 41,567 at the 2010 census. The community lies to the west of Baltimore along the city's border. Catonsville contains the majority of th ...

. The paved pathway runs parallel to the

Baltimore and Ohio Railroad The Baltimore and Ohio Railroad was the first common carrier railroad and the oldest railroad in the United States, with its first section opening in 1830. Merchants from Baltimore, which had benefited to some extent from the construction of ...

to the north, and the

Patapsco River The Patapsco River mainstem is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 river in central Maryland that flows into the Chesapeake Bay. The river's tidal port ...

to the south. The original segment of the path connected the Lost Lake to the

Patapsco Swinging Bridge The Patapsco Swinging Bridge is located in the Avalon/Orange Grove area of Patapsco Valley State Park in central Maryland, United States. It is a suspension bridge consisting of a wooden deck supported by large cables. The Patapsco Valley has a h ...

in the Avalon area of the park. In 2006, the trail was expanded to Ilchester Road, where a second swinging bridge was built as a connection. All together, the Grist Mill Trail travels from River Road in

Relay, Maryland Relay, Maryland, or Relay House, Maryland, was formerly an important junction and rail stop on the Baltimore and Ohio Railroad, located west of Baltimore, Maryland. It was the busiest station on the line except for Baltimore itself. A town grew up ...

to Ilchester Road/River Road in

Ellicott City, Maryland Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...

References

{{coord missing, Maryland Bike paths in Maryland Catonsville, Maryland Ellicott City, Maryland Hiking trails in Maryland Oella, Maryland Protected areas of Baltimore County, Maryland Protected areas of Howard County, Maryland