| Blue Ash to Coudekerque-Branche | 4,056.95 mi (6,529.03 km) |
| Blue Ash to Coueron | 3,999.86 mi (6,437.16 km) |
| Blue Ash to Coulommiers | 4,151.57 mi (6,681.31 km) |
| Blue Ash to Courbevoic | 4,115.26 mi (6,622.87 km) |
| Blue Ash to Courcouronnes | 4,130.86 mi (6,647.98 km) |
| Blue Ash to Cournon-d'Auvergne | 4,254.68 mi (6,847.25 km) |
| Blue Ash to Courrieres | 4,095.76 mi (6,591.48 km) |
| Blue Ash to Coutras | 4,134.27 mi (6,653.46 km) |
| Blue Ash to Couzeix | 4,166.94 mi (6,706.05 km) |
| Blue Ash to Cran-Gevrier | 4,371.50 mi (7,035.25 km) |
| Blue Ash to Craponne | 4,319.06 mi (6,950.86 km) |
| Blue Ash to Creil | 4,113.59 mi (6,620.18 km) |
| Blue Ash to Crepy-en-Valois | 4,130.66 mi (6,647.65 km) |
| Blue Ash to Crest | 4,366.34 mi (7,026.94 km) |
| Blue Ash to Creteil | 4,127.07 mi (6,641.88 km) |
