| Cities | Distance |
|---|---|
| Koper to Orbetello | 248.75 mi (400.32 km) |
| Koper to Oria | 400.57 mi (644.65 km) |
| Koper to Oristano | 469.01 mi (754.79 km) |
| Koper to Orta Nova | 307.92 mi (495.55 km) |
| Koper to Orte | 223.72 mi (360.04 km) |
| Koper to Ortona | 223.57 mi (359.80 km) |
| Koper to Orvieto | 211.55 mi (340.45 km) |
| Koper to Orzinuovi | 184.38 mi (296.74 km) |
| Koper to Osimo | 143.33 mi (230.66 km) |
| Koper to Ospitaletto | 177.07 mi (284.96 km) |
| Koper to Ostuni | 385.15 mi (619.85 km) |
| Koper to Ottaviano | 326.89 mi (526.08 km) |
| Koper to Ovada | 255.92 mi (411.87 km) |
| Koper to Ozieri | 417.79 mi (672.36 km) |
| Koper to Paceco | 526.34 mi (847.05 km) |