| Kayseri to Orbetello | 1,294.78 mi (2,083.75 km) |
| Kayseri to Oria | 956.58 mi (1,539.47 km) |
| Kayseri to Oristano | 1,434.65 mi (2,308.84 km) |
| Kayseri to Orta Nova | 1,059.31 mi (1,704.79 km) |
| Kayseri to Orte | 1,235.17 mi (1,987.82 km) |
| Kayseri to Ortona | 1,132.16 mi (1,822.03 km) |
| Kayseri to Orvieto | 1,250.58 mi (2,012.61 km) |
| Kayseri to Orzinuovi | 1,382.61 mi (2,225.09 km) |
| Kayseri to Osimo | 1,187.92 mi (1,911.78 km) |
| Kayseri to Ospitaletto | 1,377.94 mi (2,217.58 km) |
| Kayseri to Ostuni | 959.78 mi (1,544.61 km) |
| Kayseri to Ottaviano | 1,122.39 mi (1,806.32 km) |
| Kayseri to Ovada | 1,436.72 mi (2,312.17 km) |
| Kayseri to Ozieri | 1,409.38 mi (2,268.18 km) |
| Kayseri to Paceco | 1,240.63 mi (1,996.60 km) |
