| Heath to Orbetello | 4,598.10 mi (7,399.93 km) |
| Heath to Oria | 4,946.43 mi (7,960.51 km) |
| Heath to Oristano | 4,580.73 mi (7,371.98 km) |
| Heath to Orta Nova | 4,831.70 mi (7,775.86 km) |
| Heath to Orte | 4,646.97 mi (7,478.57 km) |
| Heath to Ortona | 4,735.78 mi (7,621.51 km) |
| Heath to Orvieto | 4,625.36 mi (7,443.80 km) |
| Heath to Orzinuovi | 4,434.02 mi (7,135.87 km) |
| Heath to Osimo | 4,653.01 mi (7,488.29 km) |
| Heath to Ospitaletto | 4,434.13 mi (7,136.05 km) |
| Heath to Ostuni | 4,934.57 mi (7,941.42 km) |
| Heath to Ottaviano | 4,799.19 mi (7,723.55 km) |
| Heath to Ovada | 4,408.04 mi (7,094.06 km) |
| Heath to Ozieri | 4,573.18 mi (7,359.82 km) |
| Heath to Paceco | 4,831.24 mi (7,775.13 km) |
