| Wentzville to Orbetello | 5,001.21 mi (8,048.67 km) |
| Wentzville to Oria | 5,344.02 mi (8,600.36 km) |
| Wentzville to Oristano | 4,996.02 mi (8,040.32 km) |
| Wentzville to Orta Nova | 5,230.32 mi (8,417.38 km) |
| Wentzville to Orte | 5,047.97 mi (8,123.92 km) |
| Wentzville to Ortona | 5,133.52 mi (8,261.60 km) |
| Wentzville to Orvieto | 5,025.99 mi (8,088.55 km) |
| Wentzville to Orzinuovi | 4,829.08 mi (7,771.65 km) |
| Wentzville to Osimo | 5,048.59 mi (8,124.93 km) |
| Wentzville to Ospitaletto | 4,828.39 mi (7,770.54 km) |
| Wentzville to Ostuni | 5,331.51 mi (8,580.24 km) |
| Wentzville to Ottaviano | 5,201.64 mi (8,371.23 km) |
| Wentzville to Ovada | 4,807.97 mi (7,737.68 km) |
| Wentzville to Ozieri | 4,985.80 mi (8,023.86 km) |
| Wentzville to Paceco | 5,245.63 mi (8,442.03 km) |
