| Opatija to Sangeorz-Bai | 514.19 mi (827.51 km) |
| Opatija to Sannicolau Mare | 308.69 mi (496.78 km) |
| Opatija to Santana | 353.47 mi (568.86 km) |
| Opatija to Satu Mare | 441.67 mi (710.79 km) |
| Opatija to Scobinti | 618.08 mi (994.71 km) |
| Opatija to Scornicesti | 503.62 mi (810.50 km) |
| Opatija to Sebes | 449.59 mi (723.54 km) |
| Opatija to Seini | 458.12 mi (737.27 km) |
| Opatija to Sfantu-Gheorghe | 556.07 mi (894.91 km) |
| Opatija to Sibiu | 477.33 mi (768.18 km) |
| Opatija to Sighetu Marmatiei | 488.76 mi (786.58 km) |
| Opatija to Sighisoara | 508.87 mi (818.94 km) |
| Opatija to Simeria | 422.42 mi (679.82 km) |
| Opatija to Sinaia | 545.97 mi (878.66 km) |
| Opatija to Slatina | 496.32 mi (798.75 km) |
