| Welby to Cognac | 4,916.54 mi (7,912.40 km) |
| Welby to Cogolin | 5,283.14 mi (8,502.39 km) |
| Welby to Colmar | 5,087.16 mi (8,186.99 km) |
| Welby to Colombes | 4,871.92 mi (7,840.60 km) |
| Welby to Colomiers | 5,070.70 mi (8,160.50 km) |
| Welby to Combs-la-Ville | 4,893.84 mi (7,875.88 km) |
| Welby to Comines | 4,818.40 mi (7,754.47 km) |
| Welby to Compiegne | 4,870.58 mi (7,838.44 km) |
| Welby to Concarneau | 4,690.34 mi (7,548.38 km) |
| Welby to Conde-sur-l'Escaut | 4,851.83 mi (7,808.26 km) |
| Welby to Conflans-Sainte-Honorine | 4,863.21 mi (7,826.58 km) |
| Welby to Corbas | 5,111.79 mi (8,226.63 km) |
| Welby to Corbeil-Essonnes | 4,893.53 mi (7,875.37 km) |
| Welby to Cormeilles-en-Parisis | 4,867.95 mi (7,834.20 km) |
| Welby to Cosne sur Loire | 4,962.17 mi (7,985.84 km) |
