| Romilly-sur-Seine to Caguas (Puerto Rico) | 4,361.80 mi (7,019.64 km) |
| Romilly-sur-Seine to Cahokia (Illinois) | 4,451.16 mi (7,163.45 km) |
| Romilly-sur-Seine to Calabasas (California) | 5,715.64 mi (9,198.44 km) |
| Romilly-sur-Seine to Caldwell (Idaho) | 5,117.23 mi (8,235.38 km) |
| Romilly-sur-Seine to Caledonia (Wisconsin) | 4,166.66 mi (6,705.58 km) |
| Romilly-sur-Seine to Calera (Alabama) | 4,568.47 mi (7,352.24 km) |
| Romilly-sur-Seine to Calexico (California) | 5,692.81 mi (9,161.69 km) |
| Romilly-sur-Seine to Calhoun (Georgia) | 4,428.29 mi (7,126.64 km) |
| Romilly-sur-Seine to California (Maryland) | 3,900.80 mi (6,277.74 km) |
| Romilly-sur-Seine to California City (California) | 5,631.90 mi (9,063.66 km) |
| Romilly-sur-Seine to Callaway (Florida) | 4,661.33 mi (7,501.68 km) |
| Romilly-sur-Seine to Calumet City (Illinois) | 4,207.20 mi (6,770.83 km) |
| Romilly-sur-Seine to Calverton (Maryland) | 3,887.42 mi (6,256.20 km) |
| Romilly-sur-Seine to Camano (Washington) | 5,022.44 mi (8,082.84 km) |
| Romilly-sur-Seine to Camarillo (California) | 5,722.44 mi (9,209.38 km) |
