| Richland to Orbetello | 5,596.53 mi (9,006.74 km) |
| Richland to Oria | 5,879.48 mi (9,462.12 km) |
| Richland to Oristano | 5,669.89 mi (9,124.81 km) |
| Richland to Orta Nova | 5,780.78 mi (9,303.26 km) |
| Richland to Orte | 5,626.83 mi (9,055.52 km) |
| Richland to Ortona | 5,686.10 mi (9,150.89 km) |
| Richland to Orvieto | 5,604.30 mi (9,019.25 km) |
| Richland to Orzinuovi | 5,389.96 mi (8,674.31 km) |
| Richland to Osimo | 5,595.09 mi (9,004.43 km) |
| Richland to Ospitaletto | 5,384.69 mi (8,665.82 km) |
| Richland to Ostuni | 5,864.05 mi (9,437.27 km) |
| Richland to Ottaviano | 5,777.68 mi (9,298.27 km) |
| Richland to Ovada | 5,399.09 mi (8,688.99 km) |
| Richland to Ozieri | 5,642.62 mi (9,080.92 km) |
| Richland to Paceco | 5,895.72 mi (9,488.24 km) |
