| Arganil to Orbetello | 1,009.10 mi (1,623.99 km) |
| Arganil to Oria | 1,347.75 mi (2,169.00 km) |
| Arganil to Oristano | 879.20 mi (1,414.94 km) |
| Arganil to Orta Nova | 1,241.97 mi (1,998.76 km) |
| Arganil to Orte | 1,068.95 mi (1,720.30 km) |
| Arganil to Ortona | 1,171.61 mi (1,885.53 km) |
| Arganil to Orvieto | 1,055.55 mi (1,698.74 km) |
| Arganil to Orzinuovi | 976.88 mi (1,572.13 km) |
| Arganil to Osimo | 1,127.81 mi (1,815.04 km) |
| Arganil to Ospitaletto | 986.25 mi (1,587.22 km) |
| Arganil to Ostuni | 1,343.12 mi (2,161.54 km) |
| Arganil to Ottaviano | 1,180.72 mi (1,900.19 km) |
| Arganil to Ovada | 902.83 mi (1,452.97 km) |
| Arganil to Ozieri | 896.44 mi (1,442.69 km) |
| Arganil to Paceco | 1,112.94 mi (1,791.10 km) |
