| Palm River-Clair Mel to Orbetello | 5,114.85 mi (8,231.56 km) |
| Palm River-Clair Mel to Oria | 5,472.42 mi (8,807.02 km) |
| Palm River-Clair Mel to Oristano | 5,057.99 mi (8,140.05 km) |
| Palm River-Clair Mel to Orta Nova | 5,356.96 mi (8,621.19 km) |
| Palm River-Clair Mel to Orte | 5,169.01 mi (8,318.71 km) |
| Palm River-Clair Mel to Ortona | 5,265.49 mi (8,473.98 km) |
| Palm River-Clair Mel to Orvieto | 5,148.93 mi (8,286.40 km) |
| Palm River-Clair Mel to Orzinuovi | 4,977.25 mi (8,010.11 km) |
| Palm River-Clair Mel to Osimo | 5,190.37 mi (8,353.10 km) |
| Palm River-Clair Mel to Ospitaletto | 4,979.54 mi (8,013.80 km) |
| Palm River-Clair Mel to Ostuni | 5,462.63 mi (8,791.25 km) |
| Palm River-Clair Mel to Ottaviano | 5,313.83 mi (8,551.79 km) |
| Palm River-Clair Mel to Ovada | 4,938.13 mi (7,947.16 km) |
| Palm River-Clair Mel to Ozieri | 5,059.93 mi (8,143.18 km) |
| Palm River-Clair Mel to Paceco | 5,306.30 mi (8,539.66 km) |
