| Romilly-sur-Seine to Carson (California) | 5,719.38 mi (9,204.45 km) |
| Romilly-sur-Seine to Carson City (Nevada) | 5,463.05 mi (8,791.93 km) |
| Romilly-sur-Seine to Carteret (New Jersey) | 3,708.66 mi (5,968.51 km) |
| Romilly-sur-Seine to Cartersville (Georgia) | 4,437.79 mi (7,141.93 km) |
| Romilly-sur-Seine to Carthage (Missouri) | 4,681.79 mi (7,534.61 km) |
| Romilly-sur-Seine to Cary (Illinois) | 4,207.40 mi (6,771.16 km) |
| Romilly-sur-Seine to Cary (North Carolina) | 4,110.15 mi (6,614.64 km) |
| Romilly-sur-Seine to Casa de Oro-Mount Helix (California) | 5,737.93 mi (9,234.31 km) |
| Romilly-sur-Seine to Casa Grande (Arizona) | 5,551.51 mi (8,934.29 km) |
| Romilly-sur-Seine to Casas Adobes (Arizona) | 5,555.88 mi (8,941.33 km) |
| Romilly-sur-Seine to Cascades (Virginia) | 3,906.39 mi (6,286.72 km) |
| Romilly-sur-Seine to Casper (Wyoming) | 4,832.82 mi (7,777.68 km) |
| Romilly-sur-Seine to Casselberry (Florida) | 4,548.21 mi (7,319.64 km) |
| Romilly-sur-Seine to Castaic (California) | 5,694.80 mi (9,164.89 km) |
| Romilly-sur-Seine to Castle Pines (Colorado) | 4,957.98 mi (7,979.09 km) |
