| Lone Tree to Orbetello | 5,504.94 mi (8,859.35 km) |
| Lone Tree to Oria | 5,828.96 mi (9,380.81 km) |
| Lone Tree to Oristano | 5,531.02 mi (8,901.32 km) |
| Lone Tree to Orta Nova | 5,719.54 mi (9,204.71 km) |
| Lone Tree to Orte | 5,545.79 mi (8,925.08 km) |
| Lone Tree to Ortona | 5,622.02 mi (9,047.77 km) |
| Lone Tree to Orvieto | 5,523.23 mi (8,888.78 km) |
| Lone Tree to Orzinuovi | 5,315.89 mi (8,555.10 km) |
| Lone Tree to Osimo | 5,533.19 mi (8,904.81 km) |
| Lone Tree to Ospitaletto | 5,313.30 mi (8,550.93 km) |
| Lone Tree to Ostuni | 5,815.05 mi (9,358.42 km) |
| Lone Tree to Ottaviano | 5,700.80 mi (9,174.55 km) |
| Lone Tree to Ovada | 5,306.82 mi (8,540.49 km) |
| Lone Tree to Ozieri | 5,513.91 mi (8,873.78 km) |
| Lone Tree to Paceco | 5,775.04 mi (9,294.04 km) |
