| Ukiah to Coudekerque-Branche | 5,393.70 mi (8,680.32 km) |
| Ukiah to Coueron | 5,468.97 mi (8,801.46 km) |
| Ukiah to Coulommiers | 5,530.75 mi (8,900.89 km) |
| Ukiah to Courbevoic | 5,502.28 mi (8,855.06 km) |
| Ukiah to Courcouronnes | 5,521.95 mi (8,886.72 km) |
| Ukiah to Cournon-d'Auvergne | 5,698.68 mi (9,171.14 km) |
| Ukiah to Courrieres | 5,439.34 mi (8,753.77 km) |
| Ukiah to Coutras | 5,631.93 mi (9,063.72 km) |
| Ukiah to Couzeix | 5,631.36 mi (9,062.81 km) |
| Ukiah to Cran-Gevrier | 5,776.23 mi (9,295.94 km) |
| Ukiah to Craponne | 5,744.35 mi (9,244.64 km) |
| Ukiah to Creil | 5,489.85 mi (8,835.06 km) |
| Ukiah to Crepy-en-Valois | 5,502.77 mi (8,855.85 km) |
| Ukiah to Crest | 5,808.73 mi (9,348.25 km) |
| Ukiah to Creteil | 5,514.05 mi (8,874.01 km) |
