| Valley to Orbetello | 5,026.43 mi (8,089.27 km) |
| Valley to Oria | 5,380.23 mi (8,658.65 km) |
| Valley to Oristano | 4,990.67 mi (8,031.71 km) |
| Valley to Orta Nova | 5,264.76 mi (8,472.81 km) |
| Valley to Orte | 5,077.89 mi (8,172.07 km) |
| Valley to Ortona | 5,170.49 mi (8,321.09 km) |
| Valley to Orvieto | 5,056.89 mi (8,138.28 km) |
| Valley to Orzinuovi | 4,873.65 mi (7,843.38 km) |
| Valley to Osimo | 5,090.83 mi (8,192.90 km) |
| Valley to Ospitaletto | 4,874.73 mi (7,845.12 km) |
| Valley to Ostuni | 5,369.25 mi (8,640.98 km) |
| Valley to Ottaviano | 5,227.33 mi (8,412.58 km) |
| Valley to Ovada | 4,841.68 mi (7,791.94 km) |
| Valley to Ozieri | 4,987.55 mi (8,026.69 km) |
| Valley to Paceco | 5,241.19 mi (8,434.88 km) |
