| Sonderborg to Cabries | 816.94 mi (1,314.74 km) |
| Sonderborg to Cachan | 528.80 mi (851.02 km) |
| Sonderborg to Caen | 584.98 mi (941.43 km) |
| Sonderborg to Cagnes-sur-Mer | 786.19 mi (1,265.24 km) |
| Sonderborg to Cahors | 812.53 mi (1,307.64 km) |
| Sonderborg to Calais | 428.87 mi (690.20 km) |
| Sonderborg to Caluire-et-Cuire | 666.26 mi (1,072.24 km) |
| Sonderborg to Cambrai | 427.44 mi (687.90 km) |
| Sonderborg to Canet-en-Roussillon | 897.20 mi (1,443.91 km) |
| Sonderborg to Cannes | 794.86 mi (1,279.20 km) |
| Sonderborg to Canteleu | 528.46 mi (850.47 km) |
| Sonderborg to Capbreton | 926.22 mi (1,490.61 km) |
| Sonderborg to Carcassonne | 874.86 mi (1,407.95 km) |
| Sonderborg to Carmaux | 824.04 mi (1,326.16 km) |
| Sonderborg to Carpentras | 779.39 mi (1,254.30 km) |
