| Olten to Coudekerque-Branche | 355.28 mi (571.77 km) |
| Olten to Coueron | 450.84 mi (725.56 km) |
| Olten to Coulommiers | 244.23 mi (393.06 km) |
| Olten to Courbevoic | 281.46 mi (452.96 km) |
| Olten to Courcouronnes | 267.78 mi (430.96 km) |
| Olten to Cournon-d'Auvergne | 249.51 mi (401.54 km) |
| Olten to Courrieres | 310.86 mi (500.28 km) |
| Olten to Coutras | 415.57 mi (668.79 km) |
| Olten to Couzeix | 332.03 mi (534.35 km) |
| Olten to Cran-Gevrier | 131.33 mi (211.36 km) |
| Olten to Craponne | 187.27 mi (301.38 km) |
| Olten to Creil | 281.61 mi (453.21 km) |
| Olten to Crepy-en-Valois | 264.59 mi (425.81 km) |
| Olten to Crest | 227.70 mi (366.45 km) |
| Olten to Creteil | 269.98 mi (434.49 km) |
