SR 10 was a short-lived designation for the road that became US 68 in 1932. The entire route was concurrent with other routes for its entire length: with US 52 and US 62 between Aberdeen and Ripley, completely concurrent with SR 221 to Georgetown (SR 221 had been moved to its current alignment within one year), SR 53 to Kenton, SR 31 to Findlay, US 25 to Perrysburg, and US 23 for the remainder to Toledo.
