| Round Rock to Cadiz | 5,070.66 mi (8,160.44 km) |
| Round Rock to Calafell | 5,297.28 mi (8,525.15 km) |
| Round Rock to Calahorra | 5,100.69 mi (8,208.76 km) |
| Round Rock to Calasparra | 5,242.52 mi (8,437.02 km) |
| Round Rock to Calatayud | 5,145.81 mi (8,281.38 km) |
| Round Rock to Caldas de Montbuy | 5,309.74 mi (8,545.21 km) |
| Round Rock to Caldas de Reyes | 4,783.35 mi (7,698.06 km) |
| Round Rock to Calella | 5,332.61 mi (8,582.01 km) |
| Round Rock to Callosa de Segura | 5,285.32 mi (8,505.91 km) |
| Round Rock to Calpe | 5,311.99 mi (8,548.82 km) |
| Round Rock to Calvia | 5,395.82 mi (8,683.74 km) |
| Round Rock to Camas | 5,057.55 mi (8,139.34 km) |
| Round Rock to Cambados | 4,778.53 mi (7,690.30 km) |
| Round Rock to Cambre | 4,779.31 mi (7,691.55 km) |
| Round Rock to Cambrils | 5,278.39 mi (8,494.75 km) |
