| Porsgrunn to Creutzwald | 695.33 mi (1,119.02 km) |
| Porsgrunn to Croissy-sur-Seine | 770.11 mi (1,239.37 km) |
| Porsgrunn to Croix | 637.85 mi (1,026.53 km) |
| Porsgrunn to Crosne | 775.75 mi (1,248.45 km) |
| Porsgrunn to Cuers | 1,107.93 mi (1,783.04 km) |
| Porsgrunn to Cugnaux | 1,133.23 mi (1,823.76 km) |
| Porsgrunn to Cusset | 933.48 mi (1,502.30 km) |
| Porsgrunn to Dammarie-le-Lys | 785.94 mi (1,264.85 km) |
| Porsgrunn to Dammartin-en-Goele | 750.30 mi (1,207.49 km) |
| Porsgrunn to Dardilly | 942.37 mi (1,516.60 km) |
| Porsgrunn to Darnetal | 750.74 mi (1,208.20 km) |
| Porsgrunn to Dax | 1,157.67 mi (1,863.08 km) |
| Porsgrunn to Decines-Charpieu | 943.00 mi (1,517.61 km) |
| Porsgrunn to Denain | 656.65 mi (1,056.77 km) |
| Porsgrunn to Deuil-la-Barre | 760.78 mi (1,224.36 km) |
