| Mainz to Ciampino | 602.32 mi (969.35 km) |
| Mainz to Cicciano | 692.43 mi (1,114.37 km) |
| Mainz to Cingoli | 513.60 mi (826.55 km) |
| Mainz to Cinisello Balsamo | 309.47 mi (498.04 km) |
| Mainz to Cinisi | 850.50 mi (1,368.75 km) |
| Mainz to Cirie | 329.52 mi (530.31 km) |
| Mainz to Ciro Marina | 851.48 mi (1,370.32 km) |
| Mainz to Cislago | 301.15 mi (484.66 km) |
| Mainz to Cisterna di Latina | 619.82 mi (997.50 km) |
| Mainz to Cisternino | 777.53 mi (1,251.31 km) |
| Mainz to Citta di Castello | 488.27 mi (785.80 km) |
| Mainz to Citta Sant'Angelo | 584.81 mi (941.16 km) |
| Mainz to Cittadella | 340.88 mi (548.59 km) |
| Mainz to Cittanova | 891.10 mi (1,434.08 km) |
| Mainz to Cividale del Friuli | 358.93 mi (577.64 km) |
