| Porsgrunn to Caltagirone | 1,526.80 mi (2,457.15 km) |
| Porsgrunn to Caltanissetta | 1,506.73 mi (2,424.85 km) |
| Porsgrunn to Calvisano | 951.56 mi (1,531.38 km) |
| Porsgrunn to Calvizzano | 1,273.46 mi (2,049.43 km) |
| Porsgrunn to Camaiore | 1,049.29 mi (1,688.67 km) |
| Porsgrunn to Cameri | 941.78 mi (1,515.65 km) |
| Porsgrunn to Camisano Vicentino | 943.30 mi (1,518.09 km) |
| Porsgrunn to Campagna | 1,296.06 mi (2,085.80 km) |
| Porsgrunn to Campagnano di Roma | 1,178.97 mi (1,897.36 km) |
| Porsgrunn to Campi Bisenzio | 1,058.76 mi (1,703.92 km) |
| Porsgrunn to Campi Salentina | 1,342.80 mi (2,161.03 km) |
| Porsgrunn to Campiglia Marittima | 1,109.54 mi (1,785.64 km) |
| Porsgrunn to Campobasso | 1,231.23 mi (1,981.47 km) |
| Porsgrunn to Campobello di Licata | 1,522.42 mi (2,450.11 km) |
| Porsgrunn to Campobello di Mazara | 1,490.45 mi (2,398.66 km) |
