| Black Forest to Cortona | 5,508.83 mi (8,865.61 km) |
| Black Forest to Cosenza | 5,860.34 mi (9,431.31 km) |
| Black Forest to Cossato | 5,263.22 mi (8,470.34 km) |
| Black Forest to Costa Volpino | 5,318.88 mi (8,559.91 km) |
| Black Forest to Creazzo | 5,381.16 mi (8,660.13 km) |
| Black Forest to Crema | 5,326.39 mi (8,572.00 km) |
| Black Forest to Cremona | 5,349.84 mi (8,609.74 km) |
| Black Forest to Crevalcore | 5,409.11 mi (8,705.12 km) |
| Black Forest to Crispiano | 5,827.97 mi (9,379.22 km) |
| Black Forest to Crosia | 5,865.00 mi (9,438.81 km) |
| Black Forest to Crotone | 5,902.40 mi (9,499.00 km) |
| Black Forest to Cuneo | 5,296.17 mi (8,523.37 km) |
| Black Forest to Cuorgne | 5,252.97 mi (8,453.85 km) |
| Black Forest to Cusano Milanino | 5,300.07 mi (8,529.65 km) |
| Black Forest to Cutro | 5,900.24 mi (9,495.53 km) |
