| Weatherford to Orbetello | 5,569.50 mi (8,963.25 km) |
| Weatherford to Oria | 5,913.25 mi (9,516.45 km) |
| Weatherford to Oristano | 5,560.90 mi (8,949.40 km) |
| Weatherford to Orta Nova | 5,799.39 mi (9,333.22 km) |
| Weatherford to Orte | 5,616.65 mi (9,039.12 km) |
| Weatherford to Ortona | 5,702.69 mi (9,177.59 km) |
| Weatherford to Orvieto | 5,594.73 mi (9,003.84 km) |
| Weatherford to Orzinuovi | 5,398.49 mi (8,688.03 km) |
| Weatherford to Osimo | 5,617.99 mi (9,041.28 km) |
| Weatherford to Ospitaletto | 5,397.87 mi (8,687.04 km) |
| Weatherford to Ostuni | 5,900.81 mi (9,496.44 km) |
| Weatherford to Ottaviano | 5,770.11 mi (9,286.09 km) |
| Weatherford to Ovada | 5,376.76 mi (8,653.06 km) |
| Weatherford to Ozieri | 5,551.62 mi (8,934.47 km) |
| Weatherford to Paceco | 5,810.92 mi (9,351.77 km) |
