| Porsgrunn to Coin | 1,681.14 mi (2,705.53 km) |
| Porsgrunn to Colindres | 1,221.02 mi (1,965.04 km) |
| Porsgrunn to Collado-Villalba | 1,409.19 mi (2,267.88 km) |
| Porsgrunn to Colmenar Viejo | 1,403.12 mi (2,258.11 km) |
| Porsgrunn to Colmenarejo | 1,414.05 mi (2,275.69 km) |
| Porsgrunn to Conil de la Frontera | 1,731.07 mi (2,785.89 km) |
| Porsgrunn to Consuegra | 1,478.25 mi (2,379.02 km) |
| Porsgrunn to Corbera de Llobregat | 1,268.17 mi (2,040.93 km) |
| Porsgrunn to Cordoba | 1,601.90 mi (2,578.00 km) |
| Porsgrunn to Coria del Rio | 1,664.29 mi (2,678.41 km) |
| Porsgrunn to Crevillente | 1,515.27 mi (2,438.60 km) |
| Porsgrunn to Cuarte de Huerva | 1,295.10 mi (2,084.27 km) |
| Porsgrunn to Cubellas | 1,285.09 mi (2,068.15 km) |
| Porsgrunn to Cuellar | 1,365.39 mi (2,197.38 km) |
| Porsgrunn to Cuenca | 1,414.35 mi (2,276.18 km) |
