| Elk Plain to Orbetello | 5,633.60 mi (9,066.41 km) |
| Elk Plain to Oria | 5,907.89 mi (9,507.83 km) |
| Elk Plain to Oristano | 5,714.89 mi (9,197.22 km) |
| Elk Plain to Orta Nova | 5,811.58 mi (9,352.83 km) |
| Elk Plain to Orte | 5,661.90 mi (9,111.95 km) |
| Elk Plain to Ortona | 5,717.87 mi (9,202.03 km) |
| Elk Plain to Orvieto | 5,639.49 mi (9,075.88 km) |
| Elk Plain to Orzinuovi | 5,424.99 mi (8,730.69 km) |
| Elk Plain to Osimo | 5,626.93 mi (9,055.67 km) |
| Elk Plain to Ospitaletto | 5,419.27 mi (8,721.48 km) |
| Elk Plain to Ostuni | 5,892.26 mi (9,482.67 km) |
| Elk Plain to Ottaviano | 5,811.26 mi (9,352.31 km) |
| Elk Plain to Ovada | 5,437.27 mi (8,750.44 km) |
| Elk Plain to Ozieri | 5,685.97 mi (9,150.69 km) |
| Elk Plain to Paceco | 5,936.43 mi (9,553.76 km) |
