| Grefrath to Ciampino | 722.22 mi (1,162.30 km) |
| Grefrath to Cicciano | 815.58 mi (1,312.55 km) |
| Grefrath to Cingoli | 637.17 mi (1,025.42 km) |
| Grefrath to Cinisello Balsamo | 420.88 mi (677.34 km) |
| Grefrath to Cinisi | 967.47 mi (1,556.99 km) |
| Grefrath to Cirie | 425.48 mi (684.74 km) |
| Grefrath to Ciro Marina | 976.47 mi (1,571.47 km) |
| Grefrath to Cislago | 410.80 mi (661.12 km) |
| Grefrath to Cisterna di Latina | 740.05 mi (1,191.00 km) |
| Grefrath to Cisternino | 903.28 mi (1,453.68 km) |
| Grefrath to Citta di Castello | 609.70 mi (981.21 km) |
| Grefrath to Citta Sant'Angelo | 708.80 mi (1,140.71 km) |
| Grefrath to Cittadella | 464.96 mi (748.28 km) |
| Grefrath to Cittanova | 1,014.26 mi (1,632.30 km) |
| Grefrath to Cividale del Friuli | 484.76 mi (780.15 km) |
