| Round Rock to Channelview (Texas) | 160.58 mi (258.42 km) |
| Round Rock to Chantilly (Virginia) | 1,281.54 mi (2,062.43 km) |
| Round Rock to Chaparral (New Mexico) | 526.55 mi (847.39 km) |
| Round Rock to Chapel Hill (North Carolina) | 1,137.08 mi (1,829.96 km) |
| Round Rock to Charleston (Illinois) | 818.27 mi (1,316.87 km) |
| Round Rock to Charleston (South Carolina) | 1,051.23 mi (1,691.79 km) |
| Round Rock to Charleston (West Virginia) | 1,059.14 mi (1,704.51 km) |
| Round Rock to Charlotte (North Carolina) | 1,027.51 mi (1,653.61 km) |
| Round Rock to Charlottesville (Virginia) | 1,208.48 mi (1,944.86 km) |
| Round Rock to Chaska (Minnesota) | 1,011.55 mi (1,627.93 km) |
| Round Rock to Chatham (Illinois) | 775.37 mi (1,247.84 km) |
| Round Rock to Chattanooga (Tennessee) | 785.60 mi (1,264.30 km) |
| Round Rock to Cheat Lake (West Virginia) | 1,184.98 mi (1,907.04 km) |
| Round Rock to Chelsea (Alabama) | 674.94 mi (1,086.22 km) |
| Round Rock to Chelsea (Massachusetts) | 1,681.59 mi (2,706.26 km) |
