| Catonsville to Cividale del Friuli | 4,351.09 mi (7,002.41 km) |
| Catonsville to Civita Castellana | 4,439.48 mi (7,144.66 km) |
| Catonsville to Civitanova Marche | 4,461.49 mi (7,180.07 km) |
| Catonsville to Civitavecchia | 4,419.52 mi (7,112.53 km) |
| Catonsville to Civitella in Val di Chiana | 4,370.07 mi (7,032.95 km) |
| Catonsville to Clusone | 4,211.69 mi (6,778.07 km) |
| Catonsville to Coccaglio | 4,223.26 mi (6,796.68 km) |
| Catonsville to Codigoro | 4,338.79 mi (6,982.61 km) |
| Catonsville to Codogno | 4,224.66 mi (6,798.93 km) |
| Catonsville to Codroipo | 4,336.83 mi (6,979.45 km) |
| Catonsville to Cogoleto | 4,203.79 mi (6,765.34 km) |
| Catonsville to Colle di Val d'Elsa | 4,345.23 mi (6,992.97 km) |
| Catonsville to Colle Salvetti | 4,310.07 mi (6,936.38 km) |
| Catonsville to Collecchio | 4,260.12 mi (6,856.00 km) |
| Catonsville to Colleferro | 4,486.21 mi (7,219.85 km) |
