| Porsgrunn to Cankova | 894.94 mi (1,440.27 km) |
| Porsgrunn to Celje | 919.08 mi (1,479.11 km) |
| Porsgrunn to Cerklje na Gorenjskem | 910.66 mi (1,465.56 km) |
| Porsgrunn to Cerknica | 940.28 mi (1,513.23 km) |
| Porsgrunn to Cerkno | 914.66 mi (1,472.00 km) |
| Porsgrunn to Cerkvenjak | 904.32 mi (1,455.35 km) |
| Porsgrunn to Cirkulane | 919.81 mi (1,480.29 km) |
| Porsgrunn to Crensovci | 907.94 mi (1,461.19 km) |
| Porsgrunn to Crna na Koroskem | 899.08 mi (1,446.93 km) |
| Porsgrunn to Crnomelj | 963.19 mi (1,550.11 km) |
| Porsgrunn to Destrnik | 908.52 mi (1,462.13 km) |
| Porsgrunn to Divaca | 944.91 mi (1,520.68 km) |
| Porsgrunn to Dobje | 927.07 mi (1,491.97 km) |
| Porsgrunn to Dobrna | 911.78 mi (1,467.37 km) |
| Porsgrunn to Dobrova | 923.30 mi (1,485.91 km) |
