| Porsgrunn to Corato | 1,274.65 mi (2,051.35 km) |
| Porsgrunn to Corbetta | 943.63 mi (1,518.62 km) |
| Porsgrunn to Corciano | 1,109.69 mi (1,785.87 km) |
| Porsgrunn to Cordenons | 915.78 mi (1,473.80 km) |
| Porsgrunn to Cori | 1,215.01 mi (1,955.37 km) |
| Porsgrunn to Coriano | 1,053.78 mi (1,695.90 km) |
| Porsgrunn to Corigliano Calabro | 1,381.05 mi (2,222.59 km) |
| Porsgrunn to Corleone | 1,480.26 mi (2,382.25 km) |
| Porsgrunn to Cormano | 937.56 mi (1,508.86 km) |
| Porsgrunn to Cornaredo | 941.17 mi (1,514.66 km) |
| Porsgrunn to Cornate d'Adda | 930.44 mi (1,497.39 km) |
| Porsgrunn to Cornedo Vicentino | 935.17 mi (1,505.02 km) |
| Porsgrunn to Correggio | 992.18 mi (1,596.76 km) |
| Porsgrunn to Corridonia | 1,108.09 mi (1,783.30 km) |
| Porsgrunn to Corsico | 945.68 mi (1,521.92 km) |
