State Route 647 (SR 647) is a state highway in Washoe County, Nevada. The route currently comprises a portion of West Fourth Street in Reno and a short segment of Prater Way in Sparks. The route previously extended a greater distance east–west through Reno–Sparks, and was formerly designated as part of U.S. Route 40.

This section is missing mileposts for junctions. Please help by adding them.

The entire route is in Washoe County.

Location	mi	km	Destinations	Notes
Reno	0	0.0	I-80 west – Sacramento	Western terminus; I-80 exit 8
			McCarran Boulevard (SR 659)
	Gap in route
Reno–Sparks line			Galletti Way
Sparks			I-80 – Reno, Elko	Eastern terminus; I-80 exit 16
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

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