| Round Rock to Cehegin | 5,242.24 mi (8,436.57 km) |
| Round Rock to Cervello | 5,308.34 mi (8,542.95 km) |
| Round Rock to Cervera | 5,268.19 mi (8,478.34 km) |
| Round Rock to Ceuti | 5,267.96 mi (8,477.96 km) |
| Round Rock to Cheste | 5,250.12 mi (8,449.25 km) |
| Round Rock to Chiclana de la Frontera | 5,081.62 mi (8,178.07 km) |
| Round Rock to Chipiona | 5,057.90 mi (8,139.90 km) |
| Round Rock to Chiva | 5,248.73 mi (8,447.02 km) |
| Round Rock to Churriana de la Vega | 5,182.54 mi (8,340.49 km) |
| Round Rock to Ciempozuelos | 5,090.26 mi (8,191.98 km) |
| Round Rock to Cieza | 5,255.71 mi (8,458.25 km) |
| Round Rock to Cisterniga | 4,996.17 mi (8,040.55 km) |
| Round Rock to Ciudad de Melilla | 5,276.98 mi (8,492.47 km) |
| Round Rock to Ciudad Real | 5,112.31 mi (8,227.47 km) |
| Round Rock to Ciudad-Rodrigo | 4,938.54 mi (7,947.82 km) |
