| Wausau to Orbetello | 4,681.81 mi (7,534.65 km) |
| Wausau to Oria | 5,015.89 mi (8,072.29 km) |
| Wausau to Oristano | 4,694.28 mi (7,554.71 km) |
| Wausau to Orta Nova | 4,904.02 mi (7,892.25 km) |
| Wausau to Orte | 4,725.58 mi (7,605.08 km) |
| Wausau to Ortona | 4,806.59 mi (7,735.46 km) |
| Wausau to Orvieto | 4,703.24 mi (7,569.13 km) |
| Wausau to Orzinuovi | 4,500.46 mi (7,242.78 km) |
| Wausau to Osimo | 4,719.48 mi (7,595.27 km) |
| Wausau to Ospitaletto | 4,498.81 mi (7,240.14 km) |
| Wausau to Ostuni | 5,002.65 mi (8,050.99 km) |
| Wausau to Ottaviano | 4,880.36 mi (7,854.17 km) |
| Wausau to Ovada | 4,485.47 mi (7,218.66 km) |
| Wausau to Ozieri | 4,679.96 mi (7,531.66 km) |
| Wausau to Paceco | 4,941.15 mi (7,952.02 km) |
