| Porsgrunn to Rybnik | 716.02 mi (1,152.33 km) |
| Porsgrunn to Ryki | 703.26 mi (1,131.79 km) |
| Porsgrunn to Rypin | 560.70 mi (902.36 km) |
| Porsgrunn to Rzeszow | 794.94 mi (1,279.33 km) |
| Porsgrunn to Sandomierz | 751.51 mi (1,209.44 km) |
| Porsgrunn to Sanok | 828.24 mi (1,332.93 km) |
| Porsgrunn to Sedziszow Malopolski | 785.76 mi (1,264.55 km) |
| Porsgrunn to Sepolno Krajenskie | 492.47 mi (792.55 km) |
| Porsgrunn to Sidlice | 471.00 mi (758.00 km) |
| Porsgrunn to Siechnice | 630.19 mi (1,014.19 km) |
| Porsgrunn to Siedlce | 683.91 mi (1,100.65 km) |
| Porsgrunn to Siemianowice Slaskie | 712.83 mi (1,147.19 km) |
| Porsgrunn to Siemiatycze | 686.91 mi (1,105.48 km) |
| Porsgrunn to Sieradz | 627.87 mi (1,010.46 km) |
| Porsgrunn to Sierpc | 576.24 mi (927.37 km) |
