| Pharr to Orbetello | 5,911.04 mi (9,512.90 km) |
| Pharr to Oria | 6,261.43 mi (10,076.79 km) |
| Pharr to Oristano | 5,884.92 mi (9,470.87 km) |
| Pharr to Orta Nova | 6,146.40 mi (9,891.67 km) |
| Pharr to Orte | 5,960.86 mi (9,593.08 km) |
| Pharr to Ortona | 6,050.92 mi (9,738.01 km) |
| Pharr to Orvieto | 5,939.45 mi (9,558.61 km) |
| Pharr to Orzinuovi | 5,750.25 mi (9,254.13 km) |
| Pharr to Osimo | 5,968.92 mi (9,606.05 km) |
| Pharr to Ospitaletto | 5,750.57 mi (9,254.65 km) |
| Pharr to Ostuni | 6,249.81 mi (10,058.10 km) |
| Pharr to Ottaviano | 6,112.21 mi (9,836.65 km) |
| Pharr to Ovada | 5,722.65 mi (9,209.72 km) |
| Pharr to Ozieri | 5,879.80 mi (9,462.62 km) |
| Pharr to Paceco | 6,135.66 mi (9,874.39 km) |
