| Sonderborg to Coueron | 728.21 mi (1,171.94 km) |
| Sonderborg to Coulommiers | 508.87 mi (818.95 km) |
| Sonderborg to Courbevoic | 524.79 mi (844.57 km) |
| Sonderborg to Courcouronnes | 536.01 mi (862.63 km) |
| Sonderborg to Cournon-d'Auvergne | 696.54 mi (1,120.97 km) |
| Sonderborg to Courrieres | 420.30 mi (676.41 km) |
| Sonderborg to Coutras | 810.46 mi (1,304.32 km) |
| Sonderborg to Couzeix | 728.10 mi (1,171.77 km) |
| Sonderborg to Cran-Gevrier | 643.15 mi (1,035.05 km) |
| Sonderborg to Craponne | 671.34 mi (1,080.41 km) |
| Sonderborg to Creil | 498.43 mi (802.15 km) |
| Sonderborg to Crepy-en-Valois | 489.37 mi (787.56 km) |
| Sonderborg to Crest | 734.74 mi (1,182.45 km) |
| Sonderborg to Creteil | 525.53 mi (845.75 km) |
| Sonderborg to Creutzwald | 415.67 mi (668.96 km) |
