| Opwijk to Sangeorz-Bai | 955.24 mi (1,537.32 km) |
| Opwijk to Sannicolau Mare | 822.40 mi (1,323.53 km) |
| Opwijk to Santana | 849.72 mi (1,367.50 km) |
| Opwijk to Satu Mare | 867.03 mi (1,395.36 km) |
| Opwijk to Scobinti | 1,052.42 mi (1,693.71 km) |
| Opwijk to Scornicesti | 1,039.44 mi (1,672.81 km) |
| Opwijk to Sebes | 949.71 mi (1,528.41 km) |
| Opwijk to Seini | 885.17 mi (1,424.55 km) |
| Opwijk to Sfantu-Gheorghe | 1,047.03 mi (1,685.02 km) |
| Opwijk to Sibiu | 979.82 mi (1,576.87 km) |
| Opwijk to Sighetu Marmatiei | 906.91 mi (1,459.54 km) |
| Opwijk to Sighisoara | 993.36 mi (1,598.66 km) |
| Opwijk to Simeria | 929.76 mi (1,496.31 km) |
| Opwijk to Sinaia | 1,053.86 mi (1,696.02 km) |
| Opwijk to Slatina | 1,036.96 mi (1,668.83 km) |
