The Valley Mountains are a 28-mile (45 km) long mountain range located on the southwest border of Sanpete County, Utah, with the northeast border of Millard County. The north of the range is in Juab County; the south in Sevier County.The range is bordered by the Sevier River, and its corridor, and related valley landforms, three valleys border to the west, and Juab Valley lies to the north-northeast.