| Grayslake to Coudekerque-Branche | 4,052.76 mi (6,522.29 km) |
| Grayslake to Coueron | 4,022.79 mi (6,474.06 km) |
| Grayslake to Coulommiers | 4,157.44 mi (6,690.75 km) |
| Grayslake to Courbevoic | 4,122.24 mi (6,634.10 km) |
| Grayslake to Courcouronnes | 4,138.91 mi (6,660.93 km) |
| Grayslake to Cournon-d'Auvergne | 4,275.54 mi (6,880.82 km) |
| Grayslake to Courrieres | 4,093.53 mi (6,587.91 km) |
| Grayslake to Coutras | 4,165.25 mi (6,703.33 km) |
| Grayslake to Couzeix | 4,191.06 mi (6,744.85 km) |
| Grayslake to Cran-Gevrier | 4,385.64 mi (7,058.01 km) |
| Grayslake to Craponne | 4,336.81 mi (6,979.41 km) |
| Grayslake to Creil | 4,118.31 mi (6,627.79 km) |
| Grayslake to Crepy-en-Valois | 4,134.77 mi (6,654.27 km) |
| Grayslake to Crest | 4,388.29 mi (7,062.28 km) |
| Grayslake to Creteil | 4,134.21 mi (6,653.37 km) |
