| Porsgrunn to Rodgau | 629.53 mi (1,013.13 km) |
| Porsgrunn to Roding | 694.29 mi (1,117.35 km) |
| Porsgrunn to Rodinghausen | 476.41 mi (766.71 km) |
| Porsgrunn to Roetgen | 601.11 mi (967.40 km) |
| Porsgrunn to Rommerskirchen | 570.81 mi (918.63 km) |
| Porsgrunn to Ronnenberg | 469.58 mi (755.71 km) |
| Porsgrunn to Rosbach vor der Hohe | 610.51 mi (982.52 km) |
| Porsgrunn to Rosdorf | 526.24 mi (846.90 km) |
| Porsgrunn to Rosenheim | 784.60 mi (1,262.68 km) |
| Porsgrunn to Rosrath | 576.30 mi (927.46 km) |
| Porsgrunn to Rossdorf | 640.75 mi (1,031.18 km) |
| Porsgrunn to Rosstal | 672.92 mi (1,082.97 km) |
| Porsgrunn to Rostock | 359.65 mi (578.79 km) |
| Porsgrunn to Rotenburg an der Fulda | 561.00 mi (902.85 km) |
| Porsgrunn to Roth | 684.16 mi (1,101.05 km) |
