| Porsgrunn to Cavaillon | 1,073.94 mi (1,728.34 km) |
| Porsgrunn to Cebazat | 957.95 mi (1,541.67 km) |
| Porsgrunn to Cenon | 1,074.36 mi (1,729.01 km) |
| Porsgrunn to Cergy | 761.15 mi (1,224.95 km) |
| Porsgrunn to Cernay | 788.15 mi (1,268.40 km) |
| Porsgrunn to Cesson | 783.37 mi (1,260.72 km) |
| Porsgrunn to Cesson-Sevigne | 887.31 mi (1,427.99 km) |
| Porsgrunn to Cestas | 1,084.24 mi (1,744.92 km) |
| Porsgrunn to Chalette-sur-Loing | 817.79 mi (1,316.10 km) |
| Porsgrunn to Challans | 972.05 mi (1,564.37 km) |
| Porsgrunn to Chalon-sur-Saone | 875.35 mi (1,408.74 km) |
| Porsgrunn to Chalons-en-Champagne | 734.02 mi (1,181.30 km) |
| Porsgrunn to Chamalieres | 962.21 mi (1,548.53 km) |
| Porsgrunn to Chambery | 949.16 mi (1,527.52 km) |
| Porsgrunn to Chambly | 749.73 mi (1,206.58 km) |
