| Grudziadz to Collegno | 767.41 mi (1,235.02 km) |
| Grudziadz to Cologno al Serio | 679.39 mi (1,093.38 km) |
| Grudziadz to Cologno Monzese | 693.86 mi (1,116.66 km) |
| Grudziadz to Colorno | 700.45 mi (1,127.27 km) |
| Grudziadz to Comacchio | 675.37 mi (1,086.90 km) |
| Grudziadz to Comiso | 1,159.89 mi (1,866.66 km) |
| Grudziadz to Como | 683.20 mi (1,099.51 km) |
| Grudziadz to Concordia Sagittaria | 594.84 mi (957.31 km) |
| Grudziadz to Concorezzo | 688.80 mi (1,108.52 km) |
| Grudziadz to Conegliano | 598.69 mi (963.50 km) |
| Grudziadz to Conselice | 693.93 mi (1,116.78 km) |
| Grudziadz to Conselve | 648.40 mi (1,043.51 km) |
| Grudziadz to Conversano | 868.45 mi (1,397.64 km) |
| Grudziadz to Copertino | 914.06 mi (1,471.04 km) |
| Grudziadz to Copparo | 669.88 mi (1,078.07 km) |
