| Round Rock to Carterton | 4,834.36 mi (7,780.16 km) |
| Round Rock to Castle Bromwich | 4,805.80 mi (7,734.19 km) |
| Round Rock to Castleford | 4,788.31 mi (7,706.05 km) |
| Round Rock to Castleton | 4,761.05 mi (7,662.18 km) |
| Round Rock to Caterham | 4,907.14 mi (7,897.27 km) |
| Round Rock to Catford | 4,904.61 mi (7,893.21 km) |
| Round Rock to Caversham | 4,866.85 mi (7,832.44 km) |
| Round Rock to Chaddesden | 4,807.18 mi (7,736.40 km) |
| Round Rock to Chalfont Saint Peter | 4,879.03 mi (7,852.04 km) |
| Round Rock to Chandlers Ford | 4,864.84 mi (7,829.20 km) |
| Round Rock to Chapel en le Frith | 4,778.11 mi (7,689.63 km) |
| Round Rock to Chapeltown | 4,791.26 mi (7,710.78 km) |
| Round Rock to Chard | 4,805.21 mi (7,733.24 km) |
| Round Rock to Charlton Kings | 4,813.17 mi (7,746.04 km) |
| Round Rock to Chatham | 4,927.87 mi (7,930.64 km) |
