| Prescott Valley to Orbetello | 6,029.88 mi (9,704.16 km) |
| Prescott Valley to Oria | 6,349.74 mi (10,218.92 km) |
| Prescott Valley to Oristano | 6,060.40 mi (9,753.27 km) |
| Prescott Valley to Orta Nova | 6,241.42 mi (10,044.60 km) |
| Prescott Valley to Orte | 6,069.64 mi (9,768.14 km) |
| Prescott Valley to Ortona | 6,144.00 mi (9,887.82 km) |
| Prescott Valley to Orvieto | 6,047.02 mi (9,731.75 km) |
| Prescott Valley to Orzinuovi | 5,838.31 mi (9,395.85 km) |
| Prescott Valley to Osimo | 6,054.66 mi (9,744.03 km) |
| Prescott Valley to Ospitaletto | 5,835.38 mi (9,391.13 km) |
| Prescott Valley to Ostuni | 6,335.59 mi (10,196.14 km) |
| Prescott Valley to Ottaviano | 6,224.55 mi (10,017.44 km) |
| Prescott Valley to Ovada | 5,831.36 mi (9,384.66 km) |
| Prescott Valley to Ozieri | 6,042.45 mi (9,724.38 km) |
| Prescott Valley to Paceco | 6,303.38 mi (10,144.32 km) |
