| Powell to Orbetello | 4,619.30 mi (7,434.05 km) |
| Powell to Oria | 4,966.97 mi (7,993.57 km) |
| Powell to Oristano | 4,603.62 mi (7,408.80 km) |
| Powell to Orta Nova | 4,852.35 mi (7,809.10 km) |
| Powell to Orte | 4,667.90 mi (7,512.26 km) |
| Powell to Ortona | 4,756.30 mi (7,654.53 km) |
| Powell to Orvieto | 4,646.24 mi (7,477.40 km) |
| Powell to Orzinuovi | 4,454.13 mi (7,168.23 km) |
| Powell to Osimo | 4,673.23 mi (7,520.84 km) |
| Powell to Ospitaletto | 4,454.14 mi (7,168.24 km) |
| Powell to Ostuni | 4,955.03 mi (7,974.35 km) |
| Powell to Ottaviano | 4,820.34 mi (7,757.59 km) |
| Powell to Ovada | 4,428.78 mi (7,127.43 km) |
| Powell to Ozieri | 4,595.68 mi (7,396.04 km) |
| Powell to Paceco | 4,854.03 mi (7,811.81 km) |
