| Willoughby to Cognac | 3,882.08 mi (6,247.60 km) |
| Willoughby to Cogolin | 4,259.31 mi (6,854.69 km) |
| Willoughby to Colmar | 4,121.60 mi (6,633.08 km) |
| Willoughby to Colombes | 3,888.47 mi (6,257.88 km) |
| Willoughby to Colomiers | 4,022.38 mi (6,473.40 km) |
| Willoughby to Combs-la-Ville | 3,908.89 mi (6,290.75 km) |
| Willoughby to Comines | 3,862.13 mi (6,215.50 km) |
| Willoughby to Compiegne | 3,896.20 mi (6,270.33 km) |
| Willoughby to Concarneau | 3,663.78 mi (5,896.29 km) |
| Willoughby to Conde-sur-l'Escaut | 3,894.59 mi (6,267.74 km) |
| Willoughby to Conflans-Sainte-Honorine | 3,879.88 mi (6,244.07 km) |
| Willoughby to Corbas | 4,104.60 mi (6,605.71 km) |
| Willoughby to Corbeil-Essonnes | 3,907.48 mi (6,288.48 km) |
| Willoughby to Cormeilles-en-Parisis | 3,884.84 mi (6,252.05 km) |
| Willoughby to Cosne sur Loire | 3,964.08 mi (6,379.58 km) |
