| Portsmouth to Selargius | 940.08 mi (1,512.91 km) |
| Portsmouth to Selvazzano Dentro | 700.76 mi (1,127.77 km) |
| Portsmouth to Senago | 592.23 mi (953.11 km) |
| Portsmouth to Senigallia | 828.43 mi (1,333.23 km) |
| Portsmouth to Seravezza | 706.68 mi (1,137.29 km) |
| Portsmouth to Seregno | 591.65 mi (952.16 km) |
| Portsmouth to Seriate | 609.24 mi (980.48 km) |
| Portsmouth to Sermoneta | 925.60 mi (1,489.60 km) |
| Portsmouth to Serramanna | 923.72 mi (1,486.59 km) |
| Portsmouth to Serravalle Pistoiese | 732.60 mi (1,179.01 km) |
| Portsmouth to Sessa Aurunca | 974.76 mi (1,568.73 km) |
| Portsmouth to Sesto Calende | 567.27 mi (912.93 km) |
| Portsmouth to Sesto Fiorentino | 748.85 mi (1,205.15 km) |
| Portsmouth to Sesto San Giovanni | 598.15 mi (962.63 km) |
| Portsmouth to Sestri Levante | 664.18 mi (1,068.90 km) |
