| Welby to Coudekerque-Branche | 4,786.03 mi (7,702.37 km) |
| Welby to Coueron | 4,799.86 mi (7,724.63 km) |
| Welby to Coulommiers | 4,905.92 mi (7,895.32 km) |
| Welby to Courbevoic | 4,873.08 mi (7,842.46 km) |
| Welby to Courcouronnes | 4,891.23 mi (7,871.67 km) |
| Welby to Cournon-d'Auvergne | 5,046.17 mi (8,121.03 km) |
| Welby to Courrieres | 4,829.48 mi (7,772.30 km) |
| Welby to Coutras | 4,952.28 mi (7,969.93 km) |
| Welby to Couzeix | 4,967.70 mi (7,994.74 km) |
| Welby to Cran-Gevrier | 5,144.27 mi (8,278.91 km) |
| Welby to Craponne | 5,101.79 mi (8,210.54 km) |
| Welby to Creil | 4,865.52 mi (7,830.30 km) |
| Welby to Crepy-en-Valois | 4,880.71 mi (7,854.74 km) |
| Welby to Crest | 5,159.15 mi (8,302.85 km) |
| Welby to Creteil | 4,885.13 mi (7,861.85 km) |
