| Healdsburg to Celano | 6,225.05 mi (10,018.25 km) |
| Healdsburg to Cento | 6,009.55 mi (9,671.44 km) |
| Healdsburg to Cepagatti | 6,222.67 mi (10,014.42 km) |
| Healdsburg to Ceprano | 6,255.14 mi (10,066.68 km) |
| Healdsburg to Cercola | 6,318.20 mi (10,168.16 km) |
| Healdsburg to Cerea | 5,981.05 mi (9,625.57 km) |
| Healdsburg to Cerese | 5,976.76 mi (9,618.67 km) |
| Healdsburg to Cerignola | 6,336.88 mi (10,198.23 km) |
| Healdsburg to Cermenate | 5,893.51 mi (9,484.69 km) |
| Healdsburg to Cernusco sul Naviglio | 5,910.84 mi (9,512.58 km) |
| Healdsburg to Cerreto Guidi | 6,053.60 mi (9,742.32 km) |
| Healdsburg to Cerro Maggiore | 5,895.37 mi (9,487.67 km) |
| Healdsburg to Certaldo | 6,070.53 mi (9,769.58 km) |
| Healdsburg to Cerveteri | 6,189.24 mi (9,960.63 km) |
| Healdsburg to Cervia | 6,066.21 mi (9,762.62 km) |
