| Ramnicu Valcea to Orangevale (California) | 6,264.93 mi (10,082.44 km) |
| Ramnicu Valcea to Orchards (Washington) | 5,846.38 mi (9,408.84 km) |
| Ramnicu Valcea to Orcutt (California) | 6,488.58 mi (10,442.36 km) |
| Ramnicu Valcea to Oregon (Ohio) | 4,972.61 mi (8,002.64 km) |
| Ramnicu Valcea to Oregon (Wisconsin) | 5,118.91 mi (8,238.10 km) |
| Ramnicu Valcea to Oregon City (Oregon) | 5,869.66 mi (9,446.30 km) |
| Ramnicu Valcea to Orem (Utah) | 5,939.29 mi (9,558.37 km) |
| Ramnicu Valcea to Orinda (California) | 6,336.67 mi (10,197.89 km) |
| Ramnicu Valcea to Orland Park (Illinois) | 5,133.35 mi (8,261.32 km) |
| Ramnicu Valcea to Orlando (Florida) | 5,543.11 mi (8,920.77 km) |
| Ramnicu Valcea to Ormond Beach (Florida) | 5,492.23 mi (8,838.89 km) |
| Ramnicu Valcea to Oro Valley (Arizona) | 6,392.96 mi (10,288.48 km) |
| Ramnicu Valcea to Oroville (California) | 6,220.75 mi (10,011.33 km) |
| Ramnicu Valcea to Oshkosh (Wisconsin) | 5,035.00 mi (8,103.05 km) |
| Ramnicu Valcea to Oskaloosa (Iowa) | 5,313.56 mi (8,551.35 km) |
