Length: 201.259 mi. Direction: south-north. South Dakota Highway 25 (SD-25) is a highway divided into two segments that runs across almost the entire state of South Dakota. The first 191 miles stretch of the route begins near Claire City at the North Dakota state line, and ends close to Emery. The second 22 miles segment begins near Olivet and terminates close to Tabor. The road stretches across the counties of Bon Homme, Hutchinson, Hanson, Miner, Kingsbury, Clark, Day, Marshall, and Roberts. It was opened in 1926.
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