| Bad Honnef am Rhein to Ciampino | 662.47 mi (1,066.14 km) |
| Bad Honnef am Rhein to Cicciano | 754.78 mi (1,214.70 km) |
| Bad Honnef am Rhein to Cingoli | 576.21 mi (927.32 km) |
| Bad Honnef am Rhein to Cinisello Balsamo | 363.77 mi (585.43 km) |
| Bad Honnef am Rhein to Cinisi | 908.87 mi (1,462.68 km) |
| Bad Honnef am Rhein to Cirie | 374.17 mi (602.17 km) |
| Bad Honnef am Rhein to Ciro Marina | 915.18 mi (1,472.84 km) |
| Bad Honnef am Rhein to Cislago | 354.29 mi (570.18 km) |
| Bad Honnef am Rhein to Cisterna di Latina | 680.19 mi (1,094.66 km) |
| Bad Honnef am Rhein to Cisternino | 841.91 mi (1,354.93 km) |
| Bad Honnef am Rhein to Citta di Castello | 549.39 mi (884.15 km) |
| Bad Honnef am Rhein to Citta Sant'Angelo | 647.74 mi (1,042.44 km) |
| Bad Honnef am Rhein to Cittadella | 403.84 mi (649.91 km) |
| Bad Honnef am Rhein to Cittanova | 953.48 mi (1,534.47 km) |
| Bad Honnef am Rhein to Cividale del Friuli | 423.69 mi (681.86 km) |
