| Lake Ronkonkoma to Cognac | 3,549.15 mi (5,711.81 km) |
| Lake Ronkonkoma to Cogolin | 3,926.78 mi (6,319.53 km) |
| Lake Ronkonkoma to Colmar | 3,816.39 mi (6,141.89 km) |
| Lake Ronkonkoma to Colombes | 3,578.66 mi (5,759.30 km) |
| Lake Ronkonkoma to Colomiers | 3,681.51 mi (5,924.81 km) |
| Lake Ronkonkoma to Combs-la-Ville | 3,598.11 mi (5,790.60 km) |
| Lake Ronkonkoma to Comines | 3,564.95 mi (5,737.23 km) |
| Lake Ronkonkoma to Compiegne | 3,590.37 mi (5,778.14 km) |
| Lake Ronkonkoma to Concarneau | 3,337.37 mi (5,370.97 km) |
| Lake Ronkonkoma to Conde-sur-l'Escaut | 3,596.47 mi (5,787.95 km) |
| Lake Ronkonkoma to Conflans-Sainte-Honorine | 3,570.26 mi (5,745.78 km) |
| Lake Ronkonkoma to Corbas | 3,781.25 mi (6,085.33 km) |
| Lake Ronkonkoma to Corbeil-Essonnes | 3,596.24 mi (5,787.58 km) |
| Lake Ronkonkoma to Cormeilles-en-Parisis | 3,575.25 mi (5,753.81 km) |
| Lake Ronkonkoma to Cosne sur Loire | 3,646.63 mi (5,868.68 km) |
