| Healdsburg to Cosham | 5,323.89 mi (8,567.98 km) |
| Healdsburg to Costessey | 5,296.75 mi (8,524.29 km) |
| Healdsburg to Cottingham | 5,194.05 mi (8,359.01 km) |
| Healdsburg to Coulsdon | 5,326.86 mi (8,572.75 km) |
| Healdsburg to Coventry | 5,232.01 mi (8,420.10 km) |
| Healdsburg to Cowdenbeath | 4,997.57 mi (8,042.81 km) |
| Healdsburg to Cowes | 5,321.10 mi (8,563.49 km) |
| Healdsburg to Cowley | 5,306.35 mi (8,539.75 km) |
| Healdsburg to Cowley | 5,274.54 mi (8,488.56 km) |
| Healdsburg to Cramlington | 5,096.51 mi (8,202.04 km) |
| Healdsburg to Cranleigh | 5,326.34 mi (8,571.92 km) |
| Healdsburg to Crawley | 5,336.25 mi (8,587.87 km) |
| Healdsburg to Crayford | 5,329.60 mi (8,577.16 km) |
| Healdsburg to Crewe | 5,170.66 mi (8,321.37 km) |
| Healdsburg to Crigglestone | 5,169.85 mi (8,320.06 km) |
