| Bad Honnef am Rhein to Catania | 987.21 mi (1,588.76 km) |
| Bad Honnef am Rhein to Catanzaro | 930.99 mi (1,498.28 km) |
| Bad Honnef am Rhein to Cattolica | 528.30 mi (850.21 km) |
| Bad Honnef am Rhein to Cava de' Tirreni | 775.16 mi (1,247.50 km) |
| Bad Honnef am Rhein to Cavallino | 887.83 mi (1,428.83 km) |
| Bad Honnef am Rhein to Cavarzere | 441.84 mi (711.07 km) |
| Bad Honnef am Rhein to Cave | 667.68 mi (1,074.53 km) |
| Bad Honnef am Rhein to Cavriago | 438.50 mi (705.70 km) |
| Bad Honnef am Rhein to Cavriglia | 531.45 mi (855.28 km) |
| Bad Honnef am Rhein to Cazzago San Martino | 372.83 mi (600.02 km) |
| Bad Honnef am Rhein to Ceccano | 691.53 mi (1,112.91 km) |
| Bad Honnef am Rhein to Cecina | 529.41 mi (852.00 km) |
| Bad Honnef am Rhein to Cefalu | 932.77 mi (1,501.15 km) |
| Bad Honnef am Rhein to Ceglie Messapico | 848.65 mi (1,365.77 km) |
| Bad Honnef am Rhein to Celano | 663.33 mi (1,067.53 km) |
