| Oak Ridge to Coudekerque-Branche | 4,209.32 mi (6,774.25 km) |
| Oak Ridge to Coueron | 4,136.02 mi (6,656.28 km) |
| Oak Ridge to Coulommiers | 4,297.69 mi (6,916.46 km) |
| Oak Ridge to Courbevoic | 4,260.83 mi (6,857.14 km) |
| Oak Ridge to Courcouronnes | 4,275.74 mi (6,881.14 km) |
| Oak Ridge to Cournon-d'Auvergne | 4,391.23 mi (7,067.00 km) |
| Oak Ridge to Courrieres | 4,246.86 mi (6,834.66 km) |
| Oak Ridge to Coutras | 4,264.77 mi (6,863.49 km) |
| Oak Ridge to Couzeix | 4,301.74 mi (6,922.98 km) |
| Oak Ridge to Cran-Gevrier | 4,511.85 mi (7,261.12 km) |
| Oak Ridge to Craponne | 4,457.35 mi (7,173.41 km) |
| Oak Ridge to Creil | 4,260.52 mi (6,856.64 km) |
| Oak Ridge to Crepy-en-Valois | 4,277.90 mi (6,884.61 km) |
| Oak Ridge to Crest | 4,501.81 mi (7,244.96 km) |
| Oak Ridge to Creteil | 4,272.51 mi (6,875.95 km) |
