| Porsgrunn to Carmignano | 1,058.50 mi (1,703.48 km) |
| Porsgrunn to Carovigno | 1,318.54 mi (2,121.98 km) |
| Porsgrunn to Carpenedolo | 950.52 mi (1,529.72 km) |
| Porsgrunn to Carpi | 991.49 mi (1,595.64 km) |
| Porsgrunn to Carrara | 1,039.04 mi (1,672.18 km) |
| Porsgrunn to Carugate | 937.42 mi (1,508.64 km) |
| Porsgrunn to Casal di Principe | 1,265.13 mi (2,036.03 km) |
| Porsgrunn to Casale Monferrato | 967.44 mi (1,556.94 km) |
| Porsgrunn to Casale sul Sile | 940.19 mi (1,513.09 km) |
| Porsgrunn to Casalecchio di Reno | 1,013.16 mi (1,630.52 km) |
| Porsgrunn to Casalgrande | 1,005.00 mi (1,617.40 km) |
| Porsgrunn to Casalmaggiore | 976.72 mi (1,571.88 km) |
| Porsgrunn to Casalnuovo di Napoli | 1,273.44 mi (2,049.40 km) |
| Porsgrunn to Casalpusterlengo | 963.01 mi (1,549.82 km) |
| Porsgrunn to Casaluce | 1,266.72 mi (2,038.58 km) |
