| Round Rock to Celano | 5,785.84 mi (9,311.41 km) |
| Round Rock to Cento | 5,587.06 mi (8,991.51 km) |
| Round Rock to Cepagatti | 5,795.39 mi (9,326.77 km) |
| Round Rock to Ceprano | 5,805.99 mi (9,343.84 km) |
| Round Rock to Cercola | 5,868.88 mi (9,445.05 km) |
| Round Rock to Cerea | 5,566.19 mi (8,957.91 km) |
| Round Rock to Cerese | 5,553.17 mi (8,936.97 km) |
| Round Rock to Cerignola | 5,916.52 mi (9,521.71 km) |
| Round Rock to Cermenate | 5,460.92 mi (8,788.51 km) |
| Round Rock to Cernusco sul Naviglio | 5,477.95 mi (8,815.91 km) |
| Round Rock to Cerreto Guidi | 5,608.38 mi (9,025.81 km) |
| Round Rock to Cerro Maggiore | 5,459.26 mi (8,785.82 km) |
| Round Rock to Certaldo | 5,623.42 mi (9,050.02 km) |
| Round Rock to Cerveteri | 5,728.56 mi (9,219.23 km) |
| Round Rock to Cervia | 5,649.19 mi (9,091.49 km) |
