| Sondershausen to Chitila | 842.48 mi (1,355.84 km) |
| Sondershausen to Cisnadie | 720.78 mi (1,159.99 km) |
| Sondershausen to Cluj-Napoca | 656.31 mi (1,056.22 km) |
| Sondershausen to Codlea | 771.49 mi (1,241.59 km) |
| Sondershausen to Comanesti | 783.63 mi (1,261.14 km) |
| Sondershausen to Comarnic | 797.28 mi (1,283.09 km) |
| Sondershausen to Constanta | 959.75 mi (1,544.56 km) |
| Sondershausen to Corabia | 821.94 mi (1,322.78 km) |
| Sondershausen to Costesti | 793.81 mi (1,277.52 km) |
| Sondershausen to Covasna | 794.74 mi (1,279.01 km) |
| Sondershausen to Craiova | 770.55 mi (1,240.07 km) |
| Sondershausen to Cristuru Secuiesc | 731.94 mi (1,177.94 km) |
| Sondershausen to Cugir | 685.32 mi (1,102.91 km) |
| Sondershausen to Cumpana | 958.98 mi (1,543.32 km) |
| Sondershausen to Curtea de Arges | 765.47 mi (1,231.91 km) |
