Ohio State Route 121
| Route information | ||||
|---|---|---|---|---|
| Maintained by ODOT | ||||
| Length | 35.94 mi (57.84 km) | |||
| Existed | 1924–present | |||
| Major junctions | ||||
| South end | SR 121 near New Paris | |||
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| North end | SR 47 / SR 185 in Versailles | |||
| Location | ||||
| Country | United States | |||
| State | Ohio | |||
| Counties | Preble, Darke | |||
| Highway system | ||||
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State Route 121 (SR 121) is a state highway in western Ohio. It starts at Indiana State Road 121 near New Paris, Ohio, and ends at State Route 47 and State Route 185 in Versailles, Ohio.