| Round Rock to Cassina de' Pecchi | 5,479.31 mi (8,818.09 km) |
| Round Rock to Cassino | 5,821.24 mi (9,368.39 km) |
| Round Rock to Castagneto Carducci | 5,619.94 mi (9,044.42 km) |
| Round Rock to Castano Primo | 5,453.66 mi (8,776.82 km) |
| Round Rock to Castel Bolognese | 5,624.36 mi (9,051.53 km) |
| Round Rock to Castel Gandolfo | 5,761.84 mi (9,272.78 km) |
| Round Rock to Castel Goffredo | 5,532.50 mi (8,903.69 km) |
| Round Rock to Castel Maggiore | 5,596.95 mi (9,007.43 km) |
| Round Rock to Castel Mella | 5,511.64 mi (8,870.13 km) |
| Round Rock to Castel San Giorgio | 5,886.98 mi (9,474.18 km) |
| Round Rock to Castel San Giovanni | 5,499.63 mi (8,850.80 km) |
| Round Rock to Castel San Pietro Terme | 5,612.28 mi (9,032.09 km) |
| Round Rock to Castel Volturno | 5,843.17 mi (9,403.68 km) |
| Round Rock to Castelbuono | 5,979.37 mi (9,622.87 km) |
| Round Rock to Casteldaccia | 5,949.78 mi (9,575.25 km) |
