| Belfast to Sangeorgiu de Mures | 1,430.84 mi (2,302.72 km) |
| Belfast to Sangeorz-Bai | 1,408.36 mi (2,266.53 km) |
| Belfast to Sannicolau Mare | 1,300.00 mi (2,092.15 km) |
| Belfast to Santana | 1,322.65 mi (2,128.60 km) |
| Belfast to Satu Mare | 1,322.18 mi (2,127.84 km) |
| Belfast to Scobinti | 1,497.41 mi (2,409.84 km) |
| Belfast to Scornicesti | 1,514.66 mi (2,437.61 km) |
| Belfast to Sebes | 1,418.93 mi (2,283.54 km) |
| Belfast to Seini | 1,339.35 mi (2,155.47 km) |
| Belfast to Sfantu-Gheorghe | 1,509.75 mi (2,429.71 km) |
| Belfast to Sibiu | 1,448.40 mi (2,330.98 km) |
| Belfast to Sighetu Marmatiei | 1,356.92 mi (2,183.76 km) |
| Belfast to Sighisoara | 1,456.59 mi (2,344.15 km) |
| Belfast to Simeria | 1,401.54 mi (2,255.56 km) |
| Belfast to Sinaia | 1,521.16 mi (2,448.06 km) |
