| Round Rock to Coudekerque-Branche | 5,011.01 mi (8,064.44 km) |
| Round Rock to Coueron | 4,961.36 mi (7,984.54 km) |
| Round Rock to Coulommiers | 5,109.36 mi (8,222.72 km) |
| Round Rock to Courbevoic | 5,073.36 mi (8,164.78 km) |
| Round Rock to Courcouronnes | 5,089.29 mi (8,190.41 km) |
| Round Rock to Cournon-d'Auvergne | 5,215.99 mi (8,394.32 km) |
| Round Rock to Courrieres | 5,050.65 mi (8,128.23 km) |
| Round Rock to Coutras | 5,096.54 mi (8,202.09 km) |
| Round Rock to Couzeix | 5,128.66 mi (8,253.77 km) |
| Round Rock to Cran-Gevrier | 5,331.62 mi (8,580.42 km) |
| Round Rock to Craponne | 5,279.88 mi (8,497.15 km) |
| Round Rock to Creil | 5,070.98 mi (8,160.96 km) |
| Round Rock to Crepy-en-Valois | 5,087.87 mi (8,188.13 km) |
| Round Rock to Crest | 5,327.85 mi (8,574.34 km) |
| Round Rock to Creteil | 5,085.23 mi (8,183.88 km) |
