| Northglenn to Coudekerque-Branche | 4,782.73 mi (7,697.06 km) |
| Northglenn to Coueron | 4,796.89 mi (7,719.86 km) |
| Northglenn to Coulommiers | 4,902.72 mi (7,890.17 km) |
| Northglenn to Courbevoic | 4,869.89 mi (7,837.34 km) |
| Northglenn to Courcouronnes | 4,888.06 mi (7,866.57 km) |
| Northglenn to Cournon-d'Auvergne | 5,043.13 mi (8,116.14 km) |
| Northglenn to Courrieres | 4,826.20 mi (7,767.01 km) |
| Northglenn to Coutras | 4,949.39 mi (7,965.27 km) |
| Northglenn to Couzeix | 4,964.71 mi (7,989.93 km) |
| Northglenn to Cran-Gevrier | 5,141.13 mi (8,273.85 km) |
| Northglenn to Craponne | 5,098.70 mi (8,205.57 km) |
| Northglenn to Creil | 4,862.31 mi (7,825.14 km) |
| Northglenn to Crepy-en-Valois | 4,877.49 mi (7,849.57 km) |
| Northglenn to Crest | 5,156.10 mi (8,297.95 km) |
| Northglenn to Creteil | 4,881.94 mi (7,856.73 km) |
