| Porsgrunn to Ribnica | 947.40 mi (1,524.69 km) |
| Porsgrunn to Ribnica | 898.82 mi (1,446.51 km) |
| Porsgrunn to Rogaska Slatina | 923.32 mi (1,485.94 km) |
| Porsgrunn to Rogasovci | 889.39 mi (1,431.33 km) |
| Porsgrunn to Rogatec | 924.54 mi (1,487.90 km) |
| Porsgrunn to Ruse | 901.32 mi (1,450.53 km) |
| Porsgrunn to Salovci | 891.30 mi (1,434.41 km) |
| Porsgrunn to Selnica ob Dravi | 900.23 mi (1,448.78 km) |
| Porsgrunn to Semic | 957.44 mi (1,540.85 km) |
| Porsgrunn to Sempeter pri Gorici | 925.59 mi (1,489.59 km) |
| Porsgrunn to Sencur | 910.45 mi (1,465.23 km) |
| Porsgrunn to Sentilj | 893.18 mi (1,437.43 km) |
| Porsgrunn to Sentjernej | 946.57 mi (1,523.36 km) |
| Porsgrunn to Sentjur | 921.65 mi (1,483.24 km) |
| Porsgrunn to Sentrupert | 934.77 mi (1,504.36 km) |
