| Hickory Hills to Orbetello | 4,749.59 mi (7,643.73 km) |
| Hickory Hills to Oria | 5,091.02 mi (8,193.21 km) |
| Hickory Hills to Oristano | 4,747.96 mi (7,641.10 km) |
| Hickory Hills to Orta Nova | 4,977.59 mi (8,010.65 km) |
| Hickory Hills to Orte | 4,795.83 mi (7,718.15 km) |
| Hickory Hills to Ortona | 4,880.64 mi (7,854.64 km) |
| Hickory Hills to Orvieto | 4,773.78 mi (7,682.66 km) |
| Hickory Hills to Orzinuovi | 4,575.82 mi (7,364.06 km) |
| Hickory Hills to Osimo | 4,795.34 mi (7,717.35 km) |
| Hickory Hills to Ospitaletto | 4,574.97 mi (7,362.71 km) |
| Hickory Hills to Ostuni | 5,078.39 mi (8,172.89 km) |
| Hickory Hills to Ottaviano | 4,949.77 mi (7,965.88 km) |
| Hickory Hills to Ovada | 4,555.71 mi (7,331.71 km) |
| Hickory Hills to Ozieri | 4,736.84 mi (7,623.22 km) |
| Hickory Hills to Paceco | 4,997.11 mi (8,042.08 km) |
