Maryland State Route 117 is an east-west highway in Montgomery County. It runs from Gaithersburg to near Dawsonville. MD St Rt 117 passes through the following towns in Montgomery County. Gaithersburg Clopper Germantown Boyds MD St Rt 117 is not multi-plked in Montgomery County. MD St Rt 117 is multi-plexed in Montgomery County. Interstate 270, at Gaithersburg. Maryland State Route 124, at Gaitherburg. Maryland State Route 119, near Germantown. Maryland State Route 118, near Germantown. Maryland State Route 121, near Boyds. Maryland State Route 28, near Dawsonville.
