| Healdsburg to Cernavoda | 6,424.39 mi (10,339.06 km) |
| Healdsburg to Chitila | 6,373.84 mi (10,257.70 km) |
| Healdsburg to Cisnadie | 6,261.08 mi (10,076.23 km) |
| Healdsburg to Cluj-Napoca | 6,183.66 mi (9,951.64 km) |
| Healdsburg to Codlea | 6,288.15 mi (10,119.80 km) |
| Healdsburg to Comanesti | 6,261.37 mi (10,076.70 km) |
| Healdsburg to Comarnic | 6,320.05 mi (10,171.14 km) |
| Healdsburg to Constanta | 6,446.55 mi (10,374.72 km) |
| Healdsburg to Corabia | 6,389.78 mi (10,283.36 km) |
| Healdsburg to Costesti | 6,341.40 mi (10,205.49 km) |
| Healdsburg to Covasna | 6,293.05 mi (10,127.68 km) |
| Healdsburg to Craiova | 6,340.28 mi (10,203.69 km) |
| Healdsburg to Cristuru Secuiesc | 6,242.62 mi (10,046.53 km) |
| Healdsburg to Cugir | 6,236.61 mi (10,036.86 km) |
| Healdsburg to Cumpana | 6,448.57 mi (10,377.97 km) |
