| Groningen to Collegno | 564.18 mi (907.96 km) |
| Groningen to Cologno al Serio | 545.77 mi (878.33 km) |
| Groningen to Cologno Monzese | 544.92 mi (876.96 km) |
| Groningen to Colorno | 597.61 mi (961.75 km) |
| Groningen to Comacchio | 640.76 mi (1,031.20 km) |
| Groningen to Comiso | 1,188.48 mi (1,912.68 km) |
| Groningen to Como | 523.98 mi (843.26 km) |
| Groningen to Concordia Sagittaria | 586.40 mi (943.72 km) |
| Groningen to Concorezzo | 541.37 mi (871.26 km) |
| Groningen to Conegliano | 567.43 mi (913.20 km) |
| Groningen to Conselice | 646.58 mi (1,040.57 km) |
| Groningen to Conselve | 600.81 mi (966.91 km) |
| Groningen to Conversano | 978.82 mi (1,575.26 km) |
| Groningen to Copertino | 1,044.11 mi (1,680.33 km) |
| Groningen to Copparo | 621.72 mi (1,000.56 km) |
