| Porsgrunn to Cabestany | 1,171.77 mi (1,885.79 km) |
| Porsgrunn to Cabries | 1,098.48 mi (1,767.84 km) |
| Porsgrunn to Cachan | 772.70 mi (1,243.55 km) |
| Porsgrunn to Caen | 796.59 mi (1,281.99 km) |
| Porsgrunn to Cagnes-sur-Mer | 1,073.07 mi (1,726.94 km) |
| Porsgrunn to Cahors | 1,071.41 mi (1,724.27 km) |
| Porsgrunn to Calais | 643.35 mi (1,035.38 km) |
| Porsgrunn to Caluire-et-Cuire | 942.22 mi (1,516.36 km) |
| Porsgrunn to Cambrai | 668.92 mi (1,076.53 km) |
| Porsgrunn to Canet-en-Roussillon | 1,169.41 mi (1,881.98 km) |
| Porsgrunn to Cannes | 1,081.45 mi (1,740.43 km) |
| Porsgrunn to Canteleu | 752.44 mi (1,210.93 km) |
| Porsgrunn to Capbreton | 1,168.53 mi (1,880.56 km) |
| Porsgrunn to Carcassonne | 1,142.65 mi (1,838.92 km) |
| Porsgrunn to Carmaux | 1,088.66 mi (1,752.03 km) |
