| Porsgrunn to Sprimont | 616.38 mi (991.97 km) |
| Porsgrunn to Stabroek | 577.02 mi (928.62 km) |
| Porsgrunn to Staden | 621.05 mi (999.49 km) |
| Porsgrunn to Steenokkerzeel | 602.21 mi (969.17 km) |
| Porsgrunn to Stekene | 590.53 mi (950.37 km) |
| Porsgrunn to Strombeek-Bever | 604.94 mi (973.56 km) |
| Porsgrunn to Temse | 593.53 mi (955.19 km) |
| Porsgrunn to Ternat | 610.09 mi (981.85 km) |
| Porsgrunn to Tervuren | 609.05 mi (980.17 km) |
| Porsgrunn to Tessenderlo | 584.82 mi (941.17 km) |
| Porsgrunn to Theux | 612.56 mi (985.81 km) |
| Porsgrunn to Thuin | 643.76 mi (1,036.03 km) |
| Porsgrunn to Tielt | 614.43 mi (988.84 km) |
| Porsgrunn to Tienen | 604.61 mi (973.03 km) |
| Porsgrunn to Tongeren | 599.82 mi (965.32 km) |
