| Round Lake to Cognac | 4,136.15 mi (6,656.49 km) |
| Round Lake to Cogolin | 4,511.07 mi (7,259.87 km) |
| Round Lake to Colmar | 4,351.91 mi (7,003.72 km) |
| Round Lake to Colombes | 4,123.95 mi (6,636.86 km) |
| Round Lake to Colomiers | 4,282.16 mi (6,891.47 km) |
| Round Lake to Combs-la-Ville | 4,145.02 mi (6,670.77 km) |
| Round Lake to Comines | 4,087.73 mi (6,578.56 km) |
| Round Lake to Compiegne | 4,128.47 mi (6,644.13 km) |
| Round Lake to Concarneau | 3,913.94 mi (6,298.88 km) |
| Round Lake to Conde-sur-l'Escaut | 4,120.72 mi (6,631.66 km) |
| Round Lake to Conflans-Sainte-Honorine | 4,115.28 mi (6,622.90 km) |
| Round Lake to Corbas | 4,349.69 mi (7,000.15 km) |
| Round Lake to Corbeil-Essonnes | 4,144.00 mi (6,669.13 km) |
| Round Lake to Cormeilles-en-Parisis | 4,120.18 mi (6,630.80 km) |
| Round Lake to Cosne sur Loire | 4,205.23 mi (6,767.67 km) |
