| Round Rock to Corato | 5,942.00 mi (9,562.72 km) |
| Round Rock to Corbetta | 5,462.89 mi (8,791.66 km) |
| Round Rock to Corciano | 5,691.02 mi (9,158.81 km) |
| Round Rock to Cordenons | 5,594.32 mi (9,003.18 km) |
| Round Rock to Cori | 5,776.90 mi (9,297.01 km) |
| Round Rock to Coriano | 5,670.72 mi (9,126.14 km) |
| Round Rock to Corigliano Calabro | 6,012.82 mi (9,676.70 km) |
| Round Rock to Corleone | 5,949.09 mi (9,574.14 km) |
| Round Rock to Cormano | 5,469.93 mi (8,803.01 km) |
| Round Rock to Cornaredo | 5,466.39 mi (8,797.30 km) |
| Round Rock to Cornate d'Adda | 5,478.33 mi (8,816.52 km) |
| Round Rock to Cornedo Vicentino | 5,555.30 mi (8,940.39 km) |
| Round Rock to Correggio | 5,565.30 mi (8,956.48 km) |
| Round Rock to Corridonia | 5,736.85 mi (9,232.56 km) |
| Round Rock to Corsico | 5,472.28 mi (8,806.79 km) |
