| Olsztyn to Sangeorz-Bai | 479.37 mi (771.46 km) |
| Olsztyn to Sannicolau Mare | 533.03 mi (857.83 km) |
| Olsztyn to Santana | 515.19 mi (829.12 km) |
| Olsztyn to Satu Mare | 426.84 mi (686.94 km) |
| Olsztyn to Scobinti | 524.29 mi (843.77 km) |
| Olsztyn to Scornicesti | 661.96 mi (1,065.31 km) |
| Olsztyn to Sebes | 557.28 mi (896.85 km) |
| Olsztyn to Seini | 434.22 mi (698.80 km) |
| Olsztyn to Sfantu-Gheorghe | 595.41 mi (958.23 km) |
| Olsztyn to Sibiu | 575.32 mi (925.89 km) |
| Olsztyn to Sighetu Marmatiei | 430.56 mi (692.93 km) |
| Olsztyn to Sighisoara | 556.14 mi (895.03 km) |
| Olsztyn to Simeria | 559.16 mi (899.89 km) |
| Olsztyn to Sinaia | 624.70 mi (1,005.35 km) |
| Olsztyn to Slatina | 669.11 mi (1,076.83 km) |
