| Barstow to Cocentaina | 5,936.39 mi (9,553.70 km) |
| Barstow to Coin | 5,854.99 mi (9,422.69 km) |
| Barstow to Colindres | 5,605.96 mi (9,021.92 km) |
| Barstow to Collado-Villalba | 5,707.92 mi (9,186.01 km) |
| Barstow to Colmenar Viejo | 5,716.44 mi (9,199.72 km) |
| Barstow to Colmenarejo | 5,710.82 mi (9,190.68 km) |
| Barstow to Conil de la Frontera | 5,815.97 mi (9,359.91 km) |
| Barstow to Consuegra | 5,776.72 mi (9,296.73 km) |
| Barstow to Corbera de Llobregat | 5,901.07 mi (9,496.86 km) |
| Barstow to Cordoba | 5,799.35 mi (9,333.16 km) |
| Barstow to Coria del Rio | 5,772.62 mi (9,290.14 km) |
| Barstow to Crevillente | 5,944.92 mi (9,567.42 km) |
| Barstow to Cuarte de Huerva | 5,785.54 mi (9,310.93 km) |
| Barstow to Cubellas | 5,901.33 mi (9,497.28 km) |
| Barstow to Cuellar | 5,661.49 mi (9,111.28 km) |
