| Porsgrunn to Chojnow | 594.66 mi (957.02 km) |
| Porsgrunn to Chorzow | 710.62 mi (1,143.63 km) |
| Porsgrunn to Choszczno | 465.67 mi (749.42 km) |
| Porsgrunn to Chrzanow | 730.08 mi (1,174.96 km) |
| Porsgrunn to Ciechanow | 602.41 mi (969.49 km) |
| Porsgrunn to Ciechocinek | 554.28 mi (892.02 km) |
| Porsgrunn to Cieszyn | 738.38 mi (1,188.31 km) |
| Porsgrunn to Czarna Bialostocka | 656.39 mi (1,056.36 km) |
| Porsgrunn to Czarnkow | 503.99 mi (811.09 km) |
| Porsgrunn to Czechowice-Dziedzice | 735.56 mi (1,183.76 km) |
| Porsgrunn to Czeladz | 711.31 mi (1,144.75 km) |
| Porsgrunn to Czersk Pomorski | 483.87 mi (778.71 km) |
| Porsgrunn to Czestochowa | 683.69 mi (1,100.29 km) |
| Porsgrunn to Czluchow | 476.33 mi (766.59 km) |
| Porsgrunn to Dabrowa Gornicza | 714.19 mi (1,149.38 km) |
