| Cayey to Orbetello | 4,747.28 mi (7,640.01 km) |
| Cayey to Oria | 5,094.81 mi (8,199.30 km) |
| Cayey to Oristano | 4,627.32 mi (7,446.95 km) |
| Cayey to Orta Nova | 4,986.39 mi (8,024.81 km) |
| Cayey to Orte | 4,806.65 mi (7,735.56 km) |
| Cayey to Ortona | 4,909.56 mi (7,901.18 km) |
| Cayey to Orvieto | 4,790.80 mi (7,710.05 km) |
| Cayey to Orzinuovi | 4,667.82 mi (7,512.13 km) |
| Cayey to Osimo | 4,853.87 mi (7,811.55 km) |
| Cayey to Ospitaletto | 4,673.94 mi (7,521.98 km) |
| Cayey to Ostuni | 5,089.39 mi (8,190.58 km) |
| Cayey to Ottaviano | 4,927.71 mi (7,930.38 km) |
| Cayey to Ovada | 4,607.97 mi (7,415.81 km) |
| Cayey to Ozieri | 4,644.98 mi (7,475.37 km) |
| Cayey to Paceco | 4,853.56 mi (7,811.05 km) |
