| Porsgrunn to Chenove | 839.34 mi (1,350.78 km) |
| Porsgrunn to Cherbourg | 795.45 mi (1,280.16 km) |
| Porsgrunn to Chevigny-Saint-Sauveur | 837.43 mi (1,347.71 km) |
| Porsgrunn to Chevilly-Larue | 774.03 mi (1,245.68 km) |
| Porsgrunn to Chilly-Mazarin | 778.81 mi (1,253.38 km) |
| Porsgrunn to Choisy-le-Roi | 773.40 mi (1,244.66 km) |
| Porsgrunn to Cholet | 939.16 mi (1,511.43 km) |
| Porsgrunn to Clamart | 773.16 mi (1,244.28 km) |
| Porsgrunn to Claye-Souilly | 757.33 mi (1,218.81 km) |
| Porsgrunn to Clermont | 733.40 mi (1,180.29 km) |
| Porsgrunn to Clermont-Ferrand | 961.39 mi (1,547.21 km) |
| Porsgrunn to Clermont-l'Herault | 1,102.69 mi (1,774.61 km) |
| Porsgrunn to Clichy | 765.80 mi (1,232.43 km) |
| Porsgrunn to Clichy-sous-Bois | 761.62 mi (1,225.70 km) |
| Porsgrunn to Cluses | 911.31 mi (1,466.61 km) |
