| Cities | Distance |
|---|---|
| Sluis to Orbetello | 714.72 mi (1,150.24 km) |
| Sluis to Oria | 1,009.85 mi (1,625.20 km) |
| Sluis to Oristano | 826.50 mi (1,330.13 km) |
| Sluis to Orta Nova | 903.71 mi (1,454.39 km) |
| Sluis to Orte | 743.36 mi (1,196.32 km) |
| Sluis to Ortona | 807.03 mi (1,298.79 km) |
| Sluis to Orvieto | 720.82 mi (1,160.05 km) |
| Sluis to Orzinuovi | 506.53 mi (815.18 km) |
| Sluis to Osimo | 716.55 mi (1,153.18 km) |
| Sluis to Ospitaletto | 501.54 mi (807.16 km) |
| Sluis to Ostuni | 995.51 mi (1,602.12 km) |
| Sluis to Ottaviano | 894.95 mi (1,440.29 km) |
| Sluis to Ovada | 520.76 mi (838.09 km) |
| Sluis to Ozieri | 787.94 mi (1,268.07 km) |
| Sluis to Paceco | 1,023.10 mi (1,646.52 km) |