Sun Run is a 2.85 mi (4.59 km) long 1st order tributary to the Ararat River in Patrick County, Virginia.

Sun Run rises on the Big Laurel Creek divide in Patrick County about 0.25 miles east of Groundhog Mountain.

Sun Run then flows east then curves south to join the Ararat River about 2 miles northwest of Carters Mill, Virginia.

[2] Sun Run drains 1.80 square miles (4.7 km2) of area, receives about 54.3 in/year of precipitation, has a wetness index of 283.34, and is about 80% forested.

This article related to a river in Virginia is a stub.