| Porsgrunn to Santa Venerina | 1,500.41 mi (2,414.67 km) |
| Porsgrunn to Santeramo in Colle | 1,302.05 mi (2,095.45 km) |
| Porsgrunn to Santo Stefano di Magra | 1,033.20 mi (1,662.77 km) |
| Porsgrunn to Santo Stino di Livenza | 932.84 mi (1,501.26 km) |
| Porsgrunn to Sarezzo | 930.61 mi (1,497.67 km) |
| Porsgrunn to Sarno | 1,282.16 mi (2,063.44 km) |
| Porsgrunn to Saronno | 932.50 mi (1,500.71 km) |
| Porsgrunn to Sarzana | 1,036.59 mi (1,668.23 km) |
| Porsgrunn to Sassari | 1,271.53 mi (2,046.34 km) |
| Porsgrunn to Sasso Marconi | 1,018.81 mi (1,639.62 km) |
| Porsgrunn to Sassuolo | 1,007.28 mi (1,621.06 km) |
| Porsgrunn to Sava | 1,337.64 mi (2,152.72 km) |
| Porsgrunn to Saviano | 1,274.60 mi (2,051.27 km) |
| Porsgrunn to Savigliano | 1,003.27 mi (1,614.61 km) |
| Porsgrunn to Savignano sul Panaro | 1,012.52 mi (1,629.50 km) |
