| Porsgrunn to Rheinbach | 596.12 mi (959.36 km) |
| Porsgrunn to Rheinberg | 536.90 mi (864.06 km) |
| Porsgrunn to Rheine | 480.24 mi (772.88 km) |
| Porsgrunn to Rheinfelden (Baden) | 802.17 mi (1,290.96 km) |
| Porsgrunn to Ribnitz-Damgarten | 352.01 mi (566.50 km) |
| Porsgrunn to Richterich | 591.69 mi (952.23 km) |
| Porsgrunn to Riedlingen | 757.34 mi (1,218.83 km) |
| Porsgrunn to Riegelsberg | 687.63 mi (1,106.63 km) |
| Porsgrunn to Rielasingen-Worblingen | 787.14 mi (1,266.78 km) |
| Porsgrunn to Riesa | 557.44 mi (897.11 km) |
| Porsgrunn to Rietberg | 507.90 mi (817.39 km) |
| Porsgrunn to Rinteln | 479.09 mi (771.02 km) |
| Porsgrunn to Ritterhude | 411.31 mi (661.94 km) |
| Porsgrunn to Rodenbach | 620.05 mi (997.87 km) |
| Porsgrunn to Rodental | 612.62 mi (985.91 km) |
