| Pearl River to Orbetello | 4,192.71 mi (6,747.52 km) |
| Pearl River to Oria | 4,545.08 mi (7,314.60 km) |
| Pearl River to Oristano | 4,164.17 mi (6,701.59 km) |
| Pearl River to Orta Nova | 4,429.75 mi (7,128.99 km) |
| Pearl River to Orte | 4,243.39 mi (6,829.08 km) |
| Pearl River to Ortona | 4,334.96 mi (6,976.45 km) |
| Pearl River to Orvieto | 4,222.20 mi (6,794.98 km) |
| Pearl River to Orzinuovi | 4,036.76 mi (6,496.54 km) |
| Pearl River to Osimo | 4,254.47 mi (6,846.90 km) |
| Pearl River to Ospitaletto | 4,037.64 mi (6,497.95 km) |
| Pearl River to Ostuni | 4,533.85 mi (7,296.52 km) |
| Pearl River to Ottaviano | 4,393.82 mi (7,071.16 km) |
| Pearl River to Ovada | 4,006.25 mi (6,447.44 km) |
| Pearl River to Ozieri | 4,159.08 mi (6,693.39 km) |
| Pearl River to Paceco | 4,414.91 mi (7,105.12 km) |
