Belson Run is a long 1st order tributary to Sewickley Creek in Westmoreland County, Pennsylvania. This is the only stream of this name in the United States.
Belson Run rises about 0.5 miles north of Central, Pennsylvania, and then flows northwest to join Sewickley Creek at Hunker.
Belson Run drains of area, receives about 41.4 in/year of precipitation, has a wetness index of 416.98, and is about 37% forested.