| Rancho Santa Margarita to Cognac | 5,702.68 mi (9,177.57 km) |
| Rancho Santa Margarita to Cogolin | 6,062.90 mi (9,757.29 km) |
| Rancho Santa Margarita to Colmar | 5,847.97 mi (9,411.40 km) |
| Rancho Santa Margarita to Colombes | 5,641.52 mi (9,079.15 km) |
| Rancho Santa Margarita to Colomiers | 5,860.08 mi (9,430.89 km) |
| Rancho Santa Margarita to Combs-la-Ville | 5,663.73 mi (9,114.89 km) |
| Rancho Santa Margarita to Comines | 5,578.99 mi (8,978.51 km) |
| Rancho Santa Margarita to Compiegne | 5,637.02 mi (9,071.90 km) |
| Rancho Santa Margarita to Concarneau | 5,475.79 mi (8,812.43 km) |
| Rancho Santa Margarita to Conde-sur-l'Escaut | 5,612.35 mi (9,032.21 km) |
| Rancho Santa Margarita to Conflans-Sainte-Honorine | 5,632.85 mi (9,065.20 km) |
| Rancho Santa Margarita to Corbas | 5,887.28 mi (9,474.66 km) |
| Rancho Santa Margarita to Corbeil-Essonnes | 5,663.80 mi (9,115.01 km) |
| Rancho Santa Margarita to Cormeilles-en-Parisis | 5,637.46 mi (9,072.62 km) |
| Rancho Santa Margarita to Cosne sur Loire | 5,735.92 mi (9,231.07 km) |
