| Helensburgh to Selargius | 1,320.96 mi (2,125.89 km) |
| Helensburgh to Selvazzano Dentro | 1,025.59 mi (1,650.52 km) |
| Helensburgh to Senago | 937.91 mi (1,509.42 km) |
| Helensburgh to Senigallia | 1,160.16 mi (1,867.10 km) |
| Helensburgh to Seravezza | 1,058.78 mi (1,703.93 km) |
| Helensburgh to Seregno | 935.98 mi (1,506.31 km) |
| Helensburgh to Seriate | 948.56 mi (1,526.55 km) |
| Helensburgh to Sermoneta | 1,276.59 mi (2,054.48 km) |
| Helensburgh to Serramanna | 1,305.08 mi (2,100.33 km) |
| Helensburgh to Serravalle Pistoiese | 1,080.99 mi (1,739.69 km) |
| Helensburgh to Sessa Aurunca | 1,321.65 mi (2,126.99 km) |
| Helensburgh to Sesto Calende | 915.68 mi (1,473.64 km) |
| Helensburgh to Sesto Fiorentino | 1,095.03 mi (1,762.27 km) |
| Helensburgh to Sesto San Giovanni | 943.51 mi (1,518.43 km) |
| Helensburgh to Sestri Levante | 1,020.36 mi (1,642.12 km) |
