| Clive to Orbetello | 4,990.37 mi (8,031.22 km) |
| Clive to Oria | 5,325.72 mi (8,570.92 km) |
| Clive to Oristano | 4,999.74 mi (8,046.30 km) |
| Clive to Orta Nova | 5,213.60 mi (8,390.47 km) |
| Clive to Orte | 5,034.59 mi (8,102.38 km) |
| Clive to Ortona | 5,116.22 mi (8,233.76 km) |
| Clive to Orvieto | 5,012.29 mi (8,066.50 km) |
| Clive to Orzinuovi | 4,810.20 mi (7,741.27 km) |
| Clive to Osimo | 5,029.35 mi (8,093.95 km) |
| Clive to Ospitaletto | 4,808.67 mi (7,738.80 km) |
| Clive to Ostuni | 5,312.57 mi (8,549.75 km) |
| Clive to Ottaviano | 5,189.26 mi (8,351.31 km) |
| Clive to Ovada | 4,794.40 mi (7,715.85 km) |
| Clive to Ozieri | 4,986.21 mi (8,024.53 km) |
| Clive to Paceco | 5,247.28 mi (8,444.68 km) |
