| Groningen to Cortona | 730.23 mi (1,175.19 km) |
| Groningen to Cosenza | 1,064.79 mi (1,713.62 km) |
| Groningen to Cossato | 533.40 mi (858.43 km) |
| Groningen to Costa Volpino | 534.19 mi (859.69 km) |
| Groningen to Creazzo | 574.77 mi (925.00 km) |
| Groningen to Crema | 560.13 mi (901.44 km) |
| Groningen to Cremona | 579.86 mi (933.20 km) |
| Groningen to Crevalcore | 622.68 mi (1,002.10 km) |
| Groningen to Crispiano | 1,004.23 mi (1,616.15 km) |
| Groningen to Crosia | 1,058.59 mi (1,703.63 km) |
| Groningen to Crotone | 1,096.68 mi (1,764.94 km) |
| Groningen to Cuneo | 611.95 mi (984.84 km) |
| Groningen to Cuorgne | 542.97 mi (873.83 km) |
| Groningen to Cusano Milanino | 542.54 mi (873.13 km) |
| Groningen to Cutro | 1,097.02 mi (1,765.48 km) |
