| Porsgrunn to Rochefort | 1,011.82 mi (1,628.37 km) |
| Porsgrunn to Rodez | 1,063.42 mi (1,711.41 km) |
| Porsgrunn to Rognac | 1,096.36 mi (1,764.42 km) |
| Porsgrunn to Roissy-en-Brie | 767.93 mi (1,235.86 km) |
| Porsgrunn to Romainville | 765.13 mi (1,231.35 km) |
| Porsgrunn to Romans-sur-Isere | 991.41 mi (1,595.52 km) |
| Porsgrunn to Rombas | 696.93 mi (1,121.59 km) |
| Porsgrunn to Romilly-sur-Seine | 771.22 mi (1,241.16 km) |
| Porsgrunn to Ronchin | 643.58 mi (1,035.75 km) |
| Porsgrunn to Roncq | 633.49 mi (1,019.51 km) |
| Porsgrunn to Roquebrune-sur-Argens | 1,090.67 mi (1,755.27 km) |
| Porsgrunn to Roquevaire | 1,103.21 mi (1,775.44 km) |
| Porsgrunn to Rosny-sous-Bois | 765.51 mi (1,231.97 km) |
| Porsgrunn to Roubaix | 636.59 mi (1,024.49 km) |
| Porsgrunn to Rouen | 752.00 mi (1,210.23 km) |
