| Porsgrunn to Busto Arsizio | 933.69 mi (1,502.63 km) |
| Porsgrunn to Busto Garolfo | 938.07 mi (1,509.68 km) |
| Porsgrunn to Cabras | 1,326.37 mi (2,134.58 km) |
| Porsgrunn to Cadelbosco di Sopra | 992.11 mi (1,596.65 km) |
| Porsgrunn to Cadoneghe | 948.73 mi (1,526.84 km) |
| Porsgrunn to Cagli | 1,082.68 mi (1,742.40 km) |
| Porsgrunn to Cagliari | 1,374.37 mi (2,211.83 km) |
| Porsgrunn to Cairo Montenotte | 1,018.56 mi (1,639.22 km) |
| Porsgrunn to Caivano | 1,270.81 mi (2,045.18 km) |
| Porsgrunn to Calcinaia | 1,066.96 mi (1,717.11 km) |
| Porsgrunn to Calcinato | 944.10 mi (1,519.38 km) |
| Porsgrunn to Calderara di Reno | 1,007.36 mi (1,621.18 km) |
| Porsgrunn to Caldogno | 936.78 mi (1,507.61 km) |
| Porsgrunn to Calenzano | 1,055.40 mi (1,698.49 km) |
| Porsgrunn to Calolziocorte | 920.09 mi (1,480.74 km) |
