| Healdsburg to Cocentaina | 5,965.16 mi (9,600.00 km) |
| Healdsburg to Coin | 5,911.61 mi (9,513.82 km) |
| Healdsburg to Colindres | 5,622.26 mi (9,048.15 km) |
| Healdsburg to Collado-Villalba | 5,740.88 mi (9,239.06 km) |
| Healdsburg to Colmenar Viejo | 5,748.35 mi (9,251.08 km) |
| Healdsburg to Colmenarejo | 5,744.20 mi (9,244.40 km) |
| Healdsburg to Conil de la Frontera | 5,879.93 mi (9,462.83 km) |
| Healdsburg to Consuegra | 5,814.29 mi (9,357.19 km) |
| Healdsburg to Corbera de Llobregat | 5,907.03 mi (9,506.44 km) |
| Healdsburg to Cordoba | 5,849.72 mi (9,414.21 km) |
| Healdsburg to Coria del Rio | 5,831.08 mi (9,384.22 km) |
| Healdsburg to Crevillente | 5,977.68 mi (9,620.15 km) |
| Healdsburg to Cuarte de Huerva | 5,801.78 mi (9,337.07 km) |
| Healdsburg to Cubellas | 5,909.33 mi (9,510.16 km) |
| Healdsburg to Cuellar | 5,691.54 mi (9,159.65 km) |
