calculation. Actual mile markers may vary. Special routes Two special routes of U.S. Route 641 currently exist, and a third has existed in the past, all of which have been in Kentucky. Murray business loop US Route 641 Business is a business route of US Route 641 located mainly along the east side of Murray, Kentucky, in Calloway County. It follows Kentucky Route 121 east from US 641 along Glendale Road until KY 121 turns south along South Fourth Street, where US BUS 641 turns north. The route makes a sharp left turn at Chestnut Street and heads west before finally terminating at US 641. Benton spur route US Route 641 Spur is a spur route of US Route 641 located on the south side of Benton, Kentucky, in Marshall County in western Kentucky's Jackson Purchase region. It begins at a junction with US 641 south of Benton, and ends at the Exit 41 interchange with Interstate 69 (formerly the Julian M. Carroll Purchase Parkway). Benton truck route References External links US 641 at Kentucky Roads US 641 at US Ends 41-6 41-6 41-6 6 0641 0641 0641 0641 0641 0641 641 641 641 641 41-6