| Porsgrunn to Rothenbach an der Pegnitz | 668.27 mi (1,075.47 km) |
| Porsgrunn to Rothenburg ob der Tauber | 672.70 mi (1,082.61 km) |
| Porsgrunn to Rottweil | 757.68 mi (1,219.37 km) |
| Porsgrunn to Rudersberg | 706.86 mi (1,137.59 km) |
| Porsgrunn to Rudesheim am Rhein | 634.94 mi (1,021.83 km) |
| Porsgrunn to Rudolstadt | 583.79 mi (939.52 km) |
| Porsgrunn to Runkel | 604.96 mi (973.60 km) |
| Porsgrunn to Ruppichteroth | 578.07 mi (930.31 km) |
| Porsgrunn to Russelsheim | 632.28 mi (1,017.56 km) |
| Porsgrunn to Rutesheim | 712.74 mi (1,147.04 km) |
| Porsgrunn to Ruthen | 528.83 mi (851.07 km) |
| Porsgrunn to Saalfeld | 588.56 mi (947.20 km) |
| Porsgrunn to Saarbrucken | 691.39 mi (1,112.69 km) |
| Porsgrunn to Saarlouis | 687.35 mi (1,106.17 km) |
| Porsgrunn to Saarwellingen | 684.41 mi (1,101.45 km) |
