| Colwyn Bay to Selargius | 1,144.06 mi (1,841.19 km) |
| Colwyn Bay to Selvazzano Dentro | 882.48 mi (1,420.21 km) |
| Colwyn Bay to Senago | 782.72 mi (1,259.67 km) |
| Colwyn Bay to Senigallia | 1,014.18 mi (1,632.16 km) |
| Colwyn Bay to Seravezza | 900.64 mi (1,449.44 km) |
| Colwyn Bay to Seregno | 781.52 mi (1,257.74 km) |
| Colwyn Bay to Seriate | 796.96 mi (1,282.58 km) |
| Colwyn Bay to Sermoneta | 1,119.93 mi (1,802.35 km) |
| Colwyn Bay to Serramanna | 1,127.78 mi (1,814.98 km) |
| Colwyn Bay to Serravalle Pistoiese | 925.12 mi (1,488.84 km) |
| Colwyn Bay to Sessa Aurunca | 1,167.59 mi (1,879.06 km) |
| Colwyn Bay to Sesto Calende | 758.81 mi (1,221.18 km) |
| Colwyn Bay to Sesto Fiorentino | 940.50 mi (1,513.60 km) |
| Colwyn Bay to Sesto San Giovanni | 788.54 mi (1,269.03 km) |
| Colwyn Bay to Sestri Levante | 859.64 mi (1,383.46 km) |
