| Perry Hall to Orbetello | 4,364.54 mi (7,024.06 km) |
| Perry Hall to Oria | 4,717.31 mi (7,591.77 km) |
| Perry Hall to Oristano | 4,334.17 mi (6,975.17 km) |
| Perry Hall to Orta Nova | 4,601.93 mi (7,406.09 km) |
| Perry Hall to Orte | 4,415.43 mi (7,105.95 km) |
| Perry Hall to Ortona | 4,507.28 mi (7,253.76 km) |
| Perry Hall to Orvieto | 4,394.29 mi (7,071.93 km) |
| Perry Hall to Orzinuovi | 4,209.44 mi (6,774.45 km) |
| Perry Hall to Osimo | 4,427.01 mi (7,124.58 km) |
| Perry Hall to Ospitaletto | 4,210.38 mi (6,775.95 km) |
| Perry Hall to Ostuni | 4,706.14 mi (7,573.80 km) |
| Perry Hall to Ottaviano | 4,565.61 mi (7,347.63 km) |
| Perry Hall to Ovada | 4,178.53 mi (6,724.69 km) |
| Perry Hall to Ozieri | 4,329.57 mi (6,967.77 km) |
| Perry Hall to Paceco | 4,584.89 mi (7,378.67 km) |
