| Porsgrunn to Selargius | 1,372.54 mi (2,208.89 km) |
| Porsgrunn to Selvazzano Dentro | 952.74 mi (1,533.28 km) |
| Porsgrunn to Senago | 935.30 mi (1,505.22 km) |
| Porsgrunn to Senigallia | 1,074.52 mi (1,729.28 km) |
| Porsgrunn to Seravezza | 1,044.62 mi (1,681.15 km) |
| Porsgrunn to Seregno | 930.62 mi (1,497.70 km) |
| Porsgrunn to Seriate | 927.99 mi (1,493.45 km) |
| Porsgrunn to Sermoneta | 1,221.86 mi (1,966.39 km) |
| Porsgrunn to Serramanna | 1,361.08 mi (2,190.45 km) |
| Porsgrunn to Serravalle Pistoiese | 1,052.37 mi (1,693.62 km) |
| Porsgrunn to Sessa Aurunca | 1,248.99 mi (2,010.06 km) |
| Porsgrunn to Sesto Calende | 925.71 mi (1,489.78 km) |
| Porsgrunn to Sesto Fiorentino | 1,057.78 mi (1,702.34 km) |
| Porsgrunn to Sesto San Giovanni | 938.66 mi (1,510.62 km) |
| Porsgrunn to Sestri Levante | 1,025.59 mi (1,650.53 km) |
