| Sligo to Sangeorz-Bai | 1,507.80 mi (2,426.58 km) |
| Sligo to Sannicolau Mare | 1,394.08 mi (2,243.56 km) |
| Sligo to Santana | 1,418.12 mi (2,282.25 km) |
| Sligo to Satu Mare | 1,421.17 mi (2,287.15 km) |
| Sligo to Scobinti | 1,598.07 mi (2,571.84 km) |
| Sligo to Scornicesti | 1,609.73 mi (2,590.61 km) |
| Sligo to Sebes | 1,515.45 mi (2,438.88 km) |
| Sligo to Seini | 1,438.51 mi (2,315.06 km) |
| Sligo to Sfantu-Gheorghe | 1,607.76 mi (2,587.44 km) |
| Sligo to Sibiu | 1,545.11 mi (2,486.62 km) |
| Sligo to Sighetu Marmatiei | 1,456.71 mi (2,344.36 km) |
| Sligo to Sighisoara | 1,554.43 mi (2,501.61 km) |
| Sligo to Simeria | 1,497.42 mi (2,409.86 km) |
| Sligo to Sinaia | 1,618.25 mi (2,604.32 km) |
| Sligo to Slatina | 1,608.15 mi (2,588.06 km) |
