| Porsgrunn to Setubal | 1,642.73 mi (2,643.72 km) |
| Porsgrunn to Sever do Vouga | 1,492.43 mi (2,401.83 km) |
| Porsgrunn to Silves | 1,717.97 mi (2,764.80 km) |
| Porsgrunn to Sines | 1,678.15 mi (2,700.73 km) |
| Porsgrunn to Sintra | 1,636.45 mi (2,633.61 km) |
| Porsgrunn to Sobrado de Paiva | 1,471.49 mi (2,368.14 km) |
| Porsgrunn to Sobral de Monte Agraco | 1,617.40 mi (2,602.96 km) |
| Porsgrunn to Soure | 1,541.09 mi (2,480.15 km) |
| Porsgrunn to Tabua | 1,508.18 mi (2,427.18 km) |
| Porsgrunn to Tavira | 1,706.24 mi (2,745.93 km) |
| Porsgrunn to Tomar | 1,564.48 mi (2,517.78 km) |
| Porsgrunn to Tondela | 1,499.59 mi (2,413.35 km) |
| Porsgrunn to Torre de Moncorvo | 1,435.84 mi (2,310.76 km) |
| Porsgrunn to Torres Novas | 1,575.44 mi (2,535.42 km) |
| Porsgrunn to Torres Vedras | 1,615.89 mi (2,600.52 km) |
