| Healdsburg to Chivasso | 5,887.82 mi (9,475.54 km) |
| Healdsburg to Ciampino | 6,214.93 mi (10,001.97 km) |
| Healdsburg to Cicciano | 6,317.41 mi (10,166.90 km) |
| Healdsburg to Cingoli | 6,141.27 mi (9,883.42 km) |
| Healdsburg to Cinisello Balsamo | 5,905.69 mi (9,504.29 km) |
| Healdsburg to Cinisi | 6,439.73 mi (10,363.74 km) |
| Healdsburg to Cirie | 5,877.05 mi (9,458.20 km) |
| Healdsburg to Ciro Marina | 6,482.64 mi (10,432.79 km) |
| Healdsburg to Cislago | 5,893.03 mi (9,483.92 km) |
| Healdsburg to Cisterna di Latina | 6,233.48 mi (10,031.81 km) |
| Healdsburg to Cisternino | 6,409.21 mi (10,314.63 km) |
| Healdsburg to Citta di Castello | 6,109.13 mi (9,831.69 km) |
| Healdsburg to Citta Sant'Angelo | 6,213.45 mi (9,999.58 km) |
| Healdsburg to Cittadella | 5,970.66 mi (9,608.84 km) |
| Healdsburg to Cittanova | 6,514.66 mi (10,484.33 km) |
