| Addison to Orbetello | 4,747.96 mi (7,641.10 km) |
| Addison to Oria | 5,088.90 mi (8,189.79 km) |
| Addison to Oristano | 4,747.35 mi (7,640.12 km) |
| Addison to Orta Nova | 4,975.56 mi (8,007.40 km) |
| Addison to Orte | 4,794.03 mi (7,715.25 km) |
| Addison to Ortona | 4,878.57 mi (7,851.31 km) |
| Addison to Orvieto | 4,771.96 mi (7,679.72 km) |
| Addison to Orzinuovi | 4,573.61 mi (7,360.51 km) |
| Addison to Osimo | 4,793.12 mi (7,713.79 km) |
| Addison to Ospitaletto | 4,572.71 mi (7,359.06 km) |
| Addison to Ostuni | 5,076.23 mi (8,169.40 km) |
| Addison to Ottaviano | 4,948.05 mi (7,963.11 km) |
| Addison to Ovada | 4,553.88 mi (7,328.76 km) |
| Addison to Ozieri | 4,736.01 mi (7,621.86 km) |
| Addison to Paceco | 4,996.38 mi (8,040.89 km) |
