Hall Run is a long 1st order tributary to Orrs Run in Ohio County, West Virginia.
Hall Run rises about 2 miles south-southeast of Valley Grove, West Virginia, and then flows southerly to join Orrs Run about 1.5 miles east-northeast of Camp Giscowhego.
Hall Run drains of area, receives about 41.0 in/year of precipitation, has a wetness index of 310.68, and is about 44% forested.