| Porsgrunn to Chaudfontaine | 611.14 mi (983.53 km) |
| Porsgrunn to Chaumont-Gistoux | 615.28 mi (990.20 km) |
| Porsgrunn to Chimay | 662.03 mi (1,065.43 km) |
| Porsgrunn to Ciney | 635.91 mi (1,023.40 km) |
| Porsgrunn to Colfontaine | 644.93 mi (1,037.92 km) |
| Porsgrunn to Courcelles | 634.33 mi (1,020.86 km) |
| Porsgrunn to Court-Saint-Etienne | 620.26 mi (998.22 km) |
| Porsgrunn to Couvin | 659.91 mi (1,062.03 km) |
| Porsgrunn to Damme | 599.04 mi (964.07 km) |
| Porsgrunn to De Haan | 601.76 mi (968.44 km) |
| Porsgrunn to De Panne | 620.27 mi (998.22 km) |
| Porsgrunn to De Pinte | 609.27 mi (980.52 km) |
| Porsgrunn to Deerlijk | 623.36 mi (1,003.20 km) |
| Porsgrunn to Deinze | 612.15 mi (985.17 km) |
| Porsgrunn to Denderleeuw | 610.42 mi (982.38 km) |
