| Porsgrunn to Spello | 1,121.38 mi (1,804.68 km) |
| Porsgrunn to Spilamberto | 1,009.03 mi (1,623.88 km) |
| Porsgrunn to Spilimbergo | 906.92 mi (1,459.54 km) |
| Porsgrunn to Spinea | 946.74 mi (1,523.63 km) |
| Porsgrunn to Spoleto | 1,137.42 mi (1,830.51 km) |
| Porsgrunn to Spoltore | 1,166.66 mi (1,877.55 km) |
| Porsgrunn to Spresiano | 927.19 mi (1,492.17 km) |
| Porsgrunn to Squinzano | 1,340.95 mi (2,158.05 km) |
| Porsgrunn to Statte | 1,322.38 mi (2,128.17 km) |
| Porsgrunn to Stezzano | 930.33 mi (1,497.22 km) |
| Porsgrunn to Strada | 1,075.34 mi (1,730.59 km) |
| Porsgrunn to Stradella | 969.69 mi (1,560.56 km) |
| Porsgrunn to Striano | 1,281.80 mi (2,062.86 km) |
| Porsgrunn to Subiaco | 1,196.10 mi (1,924.94 km) |
| Porsgrunn to Sulmona | 1,193.09 mi (1,920.10 km) |
