| North Potomac to Coudekerque-Branche | 3,778.07 mi (6,080.22 km) |
| North Potomac to Coueron | 3,697.21 mi (5,950.08 km) |
| North Potomac to Coulommiers | 3,862.89 mi (6,216.72 km) |
| North Potomac to Courbevoic | 3,825.79 mi (6,157.02 km) |
| North Potomac to Courcouronnes | 3,840.36 mi (6,180.46 km) |
| North Potomac to Cournon-d'Auvergne | 3,952.38 mi (6,360.75 km) |
| North Potomac to Courrieres | 3,814.81 mi (6,139.34 km) |
| North Potomac to Coutras | 3,824.23 mi (6,154.50 km) |
| North Potomac to Couzeix | 3,862.38 mi (6,215.91 km) |
| North Potomac to Cran-Gevrier | 4,074.31 mi (6,556.98 km) |
| North Potomac to Craponne | 4,019.07 mi (6,468.07 km) |
| North Potomac to Creil | 3,826.16 mi (6,157.60 km) |
| North Potomac to Crepy-en-Valois | 3,843.68 mi (6,185.80 km) |
| North Potomac to Crest | 4,062.55 mi (6,538.05 km) |
| North Potomac to Creteil | 3,837.40 mi (6,175.70 km) |
