| Potomac Park to Coudekerque-Branche | 5,489.70 mi (8,834.82 km) |
| Potomac Park to Coueron | 5,537.28 mi (8,911.40 km) |
| Potomac Park to Coulommiers | 5,619.83 mi (9,044.24 km) |
| Potomac Park to Courbevoic | 5,589.26 mi (8,995.04 km) |
| Potomac Park to Courcouronnes | 5,608.34 mi (9,025.74 km) |
| Potomac Park to Cournon-d'Auvergne | 5,775.84 mi (9,295.32 km) |
| Potomac Park to Courrieres | 5,534.61 mi (8,907.09 km) |
| Potomac Park to Coutras | 5,695.83 mi (9,166.56 km) |
| Potomac Park to Couzeix | 5,702.97 mi (9,178.04 km) |
| Potomac Park to Cran-Gevrier | 5,863.22 mi (9,435.93 km) |
| Potomac Park to Craponne | 5,826.34 mi (9,376.58 km) |
| Potomac Park to Creil | 5,578.96 mi (8,978.46 km) |
| Potomac Park to Crepy-en-Valois | 5,592.95 mi (9,000.99 km) |
| Potomac Park to Crest | 5,887.74 mi (9,475.40 km) |
| Potomac Park to Creteil | 5,601.21 mi (9,014.27 km) |
