| Martha Lake to Cognac | 5,083.27 mi (8,180.73 km) |
| Martha Lake to Cogolin | 5,413.33 mi (8,711.91 km) |
| Martha Lake to Colmar | 5,152.80 mi (8,292.64 km) |
| Martha Lake to Colombes | 4,973.95 mi (8,004.80 km) |
| Martha Lake to Colomiers | 5,247.81 mi (8,445.54 km) |
| Martha Lake to Combs-la-Ville | 4,996.35 mi (8,040.84 km) |
| Martha Lake to Comines | 4,890.18 mi (7,869.99 km) |
| Martha Lake to Compiegne | 4,961.25 mi (7,984.36 km) |
| Martha Lake to Concarneau | 4,860.35 mi (7,821.98 km) |
| Martha Lake to Conde-sur-l'Escaut | 4,922.54 mi (7,922.06 km) |
| Martha Lake to Conflans-Sainte-Honorine | 4,965.64 mi (7,991.42 km) |
| Martha Lake to Corbas | 5,229.60 mi (8,416.22 km) |
| Martha Lake to Corbeil-Essonnes | 4,997.45 mi (8,042.61 km) |
| Martha Lake to Cormeilles-en-Parisis | 4,969.78 mi (7,998.09 km) |
| Martha Lake to Cosne sur Loire | 5,077.24 mi (8,171.02 km) |
