| Chaves to Orbetello | 957.27 mi (1,540.58 km) |
| Chaves to Oria | 1,304.87 mi (2,099.99 km) |
| Chaves to Oristano | 848.09 mi (1,364.86 km) |
| Chaves to Orta Nova | 1,195.70 mi (1,924.29 km) |
| Chaves to Orte | 1,016.89 mi (1,636.52 km) |
| Chaves to Ortona | 1,119.91 mi (1,802.32 km) |
| Chaves to Orvieto | 1,001.84 mi (1,612.30 km) |
| Chaves to Orzinuovi | 905.16 mi (1,456.72 km) |
| Chaves to Osimo | 1,069.45 mi (1,721.12 km) |
| Chaves to Ospitaletto | 913.75 mi (1,470.54 km) |
| Chaves to Ostuni | 1,299.04 mi (2,090.60 km) |
| Chaves to Ottaviano | 1,137.96 mi (1,831.37 km) |
| Chaves to Ovada | 834.74 mi (1,343.39 km) |
| Chaves to Ozieri | 859.34 mi (1,382.97 km) |
| Chaves to Paceco | 1,090.37 mi (1,754.79 km) |
