| Atwater to Orbetello | 6,145.77 mi (9,890.67 km) |
| Atwater to Oria | 6,443.29 mi (10,369.48 km) |
| Atwater to Oristano | 6,202.82 mi (9,982.48 km) |
| Atwater to Orta Nova | 6,340.80 mi (10,204.53 km) |
| Atwater to Orte | 6,179.73 mi (9,945.32 km) |
| Atwater to Ortona | 6,244.74 mi (10,049.94 km) |
| Atwater to Orvieto | 6,157.07 mi (9,908.85 km) |
| Atwater to Orzinuovi | 5,943.85 mi (9,565.70 km) |
| Atwater to Osimo | 6,153.94 mi (9,903.81 km) |
| Atwater to Ospitaletto | 5,939.41 mi (9,558.56 km) |
| Atwater to Ostuni | 6,428.24 mi (10,345.25 km) |
| Atwater to Ottaviano | 6,332.73 mi (10,191.54 km) |
| Atwater to Ovada | 5,947.02 mi (9,570.80 km) |
| Atwater to Ozieri | 6,179.14 mi (9,944.36 km) |
| Atwater to Paceco | 6,436.52 mi (10,358.58 km) |
