| Kalkar to Chitila | 1,031.77 mi (1,660.48 km) |
| Kalkar to Cisnadie | 910.96 mi (1,466.05 km) |
| Kalkar to Cluj-Napoca | 849.43 mi (1,367.02 km) |
| Kalkar to Codlea | 963.84 mi (1,551.14 km) |
| Kalkar to Comanesti | 979.16 mi (1,575.80 km) |
| Kalkar to Comarnic | 988.48 mi (1,590.80 km) |
| Kalkar to Constanta | 1,152.27 mi (1,854.39 km) |
| Kalkar to Corabia | 1,004.88 mi (1,617.19 km) |
| Kalkar to Costesti | 981.43 mi (1,579.45 km) |
| Kalkar to Covasna | 988.54 mi (1,590.91 km) |
| Kalkar to Craiova | 954.03 mi (1,535.36 km) |
| Kalkar to Cristuru Secuiesc | 925.55 mi (1,489.53 km) |
| Kalkar to Cugir | 874.41 mi (1,407.22 km) |
| Kalkar to Cumpana | 1,151.25 mi (1,852.76 km) |
| Kalkar to Curtea de Arges | 954.49 mi (1,536.10 km) |
