| Porsgrunn to Rende | 1,396.13 mi (2,246.86 km) |
| Porsgrunn to Resana | 936.18 mi (1,506.64 km) |
| Porsgrunn to Rescaldina | 933.22 mi (1,501.87 km) |
| Porsgrunn to Rezzato | 940.05 mi (1,512.87 km) |
| Porsgrunn to Rho | 938.87 mi (1,510.96 km) |
| Porsgrunn to Ribera | 1,501.93 mi (2,417.13 km) |
| Porsgrunn to Riccione Marina | 1,051.74 mi (1,692.61 km) |
| Porsgrunn to Riesi | 1,521.07 mi (2,447.93 km) |
| Porsgrunn to Rieti | 1,162.47 mi (1,870.82 km) |
| Porsgrunn to Rignano Flaminio | 1,174.80 mi (1,890.66 km) |
| Porsgrunn to Rignano sull'Arno | 1,066.03 mi (1,715.61 km) |
| Porsgrunn to Rimini | 1,047.25 mi (1,685.39 km) |
| Porsgrunn to Rionero in Vulture | 1,283.70 mi (2,065.92 km) |
| Porsgrunn to Riposto | 1,497.46 mi (2,409.93 km) |
| Porsgrunn to Riva del Garda | 915.49 mi (1,473.33 km) |
