| Porsgrunn to Carpentras | 1,058.96 mi (1,704.23 km) |
| Porsgrunn to Carquefou | 936.19 mi (1,506.65 km) |
| Porsgrunn to Carqueiranne | 1,117.69 mi (1,798.75 km) |
| Porsgrunn to Carrieres-sous-Poissy | 767.24 mi (1,234.76 km) |
| Porsgrunn to Carrieres-sur-Seine | 765.65 mi (1,232.20 km) |
| Porsgrunn to Carros | 1,065.44 mi (1,714.66 km) |
| Porsgrunn to Carvin | 652.85 mi (1,050.65 km) |
| Porsgrunn to Castanet-Tolosan | 1,132.68 mi (1,822.88 km) |
| Porsgrunn to Castelginest | 1,121.67 mi (1,805.16 km) |
| Porsgrunn to Castelnau-le-Lez | 1,097.41 mi (1,766.11 km) |
| Porsgrunn to Castelnaudary | 1,140.13 mi (1,834.86 km) |
| Porsgrunn to Castelsarrasin | 1,103.05 mi (1,775.19 km) |
| Porsgrunn to Castres | 1,117.64 mi (1,798.67 km) |
| Porsgrunn to Caudebec-les-Elbeuf | 763.46 mi (1,228.67 km) |
| Porsgrunn to Caudry | 669.64 mi (1,077.67 km) |
