| Apex to Orbetello | 4,619.06 mi (7,433.67 km) |
| Apex to Oria | 4,973.82 mi (8,004.59 km) |
| Apex to Oristano | 4,580.19 mi (7,371.11 km) |
| Apex to Orta Nova | 4,858.26 mi (7,818.62 km) |
| Apex to Orte | 4,671.06 mi (7,517.34 km) |
| Apex to Ortona | 4,764.48 mi (7,667.70 km) |
| Apex to Orvieto | 4,650.22 mi (7,483.81 km) |
| Apex to Orzinuovi | 4,469.28 mi (7,192.62 km) |
| Apex to Osimo | 4,685.73 mi (7,540.95 km) |
| Apex to Ospitaletto | 4,470.65 mi (7,194.82 km) |
| Apex to Ostuni | 4,963.07 mi (7,987.28 km) |
| Apex to Ottaviano | 4,819.76 mi (7,756.65 km) |
| Apex to Ovada | 4,435.73 mi (7,138.62 km) |
| Apex to Ozieri | 4,577.68 mi (7,367.07 km) |
| Apex to Paceco | 4,830.58 mi (7,774.07 km) |
