| Bad Neuenahr-Ahrweiler to Cologno al Serio | 362.95 mi (584.12 km) |
| Bad Neuenahr-Ahrweiler to Cologno Monzese | 360.68 mi (580.46 km) |
| Bad Neuenahr-Ahrweiler to Colorno | 416.31 mi (669.99 km) |
| Bad Neuenahr-Ahrweiler to Comacchio | 467.53 mi (752.42 km) |
| Bad Neuenahr-Ahrweiler to Comiso | 1,009.64 mi (1,624.85 km) |
| Bad Neuenahr-Ahrweiler to Como | 339.47 mi (546.33 km) |
| Bad Neuenahr-Ahrweiler to Concordia Sagittaria | 422.70 mi (680.27 km) |
| Bad Neuenahr-Ahrweiler to Concorezzo | 357.36 mi (575.12 km) |
| Bad Neuenahr-Ahrweiler to Conegliano | 400.46 mi (644.47 km) |
| Bad Neuenahr-Ahrweiler to Conselice | 470.89 mi (757.82 km) |
| Bad Neuenahr-Ahrweiler to Conselve | 427.79 mi (688.46 km) |
| Bad Neuenahr-Ahrweiler to Conversano | 817.28 mi (1,315.28 km) |
| Bad Neuenahr-Ahrweiler to Copertino | 884.44 mi (1,423.37 km) |
| Bad Neuenahr-Ahrweiler to Copparo | 447.26 mi (719.80 km) |
| Bad Neuenahr-Ahrweiler to Corato | 786.77 mi (1,266.19 km) |
