| Porsgrunn to Casamassima | 1,293.45 mi (2,081.60 km) |
| Porsgrunn to Casandrino | 1,271.62 mi (2,046.48 km) |
| Porsgrunn to Casapulla | 1,262.71 mi (2,032.13 km) |
| Porsgrunn to Casarano | 1,370.38 mi (2,205.42 km) |
| Porsgrunn to Casatenovo | 927.19 mi (1,492.17 km) |
| Porsgrunn to Casciana Terme | 1,077.68 mi (1,734.36 km) |
| Porsgrunn to Cascina | 1,066.86 mi (1,716.95 km) |
| Porsgrunn to Caselle Torinese | 966.88 mi (1,556.04 km) |
| Porsgrunn to Caserta | 1,263.05 mi (2,032.68 km) |
| Porsgrunn to Casier | 936.59 mi (1,507.30 km) |
| Porsgrunn to Casorate Primo | 953.85 mi (1,535.07 km) |
| Porsgrunn to Casoria | 1,274.24 mi (2,050.69 km) |
| Porsgrunn to Cassano al Ionio | 1,366.71 mi (2,199.51 km) |
| Porsgrunn to Cassano d'Adda | 938.48 mi (1,510.34 km) |
| Porsgrunn to Cassano delle Murge | 1,296.41 mi (2,086.37 km) |
