| Nogales to Orbetello | 6,155.43 mi (9,906.20 km) |
| Nogales to Oria | 6,483.00 mi (10,433.38 km) |
| Nogales to Oristano | 6,174.52 mi (9,936.93 km) |
| Nogales to Orta Nova | 6,372.80 mi (10,256.03 km) |
| Nogales to Orte | 6,197.40 mi (9,973.75 km) |
| Nogales to Ortona | 6,275.26 mi (10,099.05 km) |
| Nogales to Orvieto | 6,174.91 mi (9,937.55 km) |
| Nogales to Orzinuovi | 5,968.95 mi (9,606.09 km) |
| Nogales to Osimo | 6,186.88 mi (9,956.83 km) |
| Nogales to Ospitaletto | 5,966.64 mi (9,602.37 km) |
| Nogales to Ostuni | 6,469.27 mi (10,411.28 km) |
| Nogales to Ottaviano | 6,352.41 mi (10,223.22 km) |
| Nogales to Ovada | 5,957.87 mi (9,588.27 km) |
| Nogales to Ozieri | 6,159.14 mi (9,912.18 km) |
| Nogales to Paceco | 6,420.41 mi (10,332.66 km) |
