| Porsgrunn to Cassina de' Pecchi | 939.70 mi (1,512.30 km) |
| Porsgrunn to Cassino | 1,230.07 mi (1,979.61 km) |
| Porsgrunn to Castagneto Carducci | 1,102.61 mi (1,774.48 km) |
| Porsgrunn to Castano Primo | 938.11 mi (1,509.75 km) |
| Porsgrunn to Castel Bolognese | 1,026.28 mi (1,651.65 km) |
| Porsgrunn to Castel Gandolfo | 1,206.74 mi (1,942.05 km) |
| Porsgrunn to Castel Goffredo | 955.23 mi (1,537.29 km) |
| Porsgrunn to Castel Maggiore | 1,007.64 mi (1,621.64 km) |
| Porsgrunn to Castel Mella | 940.93 mi (1,514.27 km) |
| Porsgrunn to Castel San Giorgio | 1,285.05 mi (2,068.09 km) |
| Porsgrunn to Castel San Giovanni | 971.91 mi (1,564.13 km) |
| Porsgrunn to Castel San Pietro Terme | 1,019.80 mi (1,641.21 km) |
| Porsgrunn to Castel Volturno | 1,261.46 mi (2,030.12 km) |
| Porsgrunn to Castelbuono | 1,476.51 mi (2,376.22 km) |
| Porsgrunn to Casteldaccia | 1,465.37 mi (2,358.28 km) |
