| Healdsburg to Cadillac (Michigan) | 1,960.66 mi (3,155.38 km) |
| Healdsburg to Caguas (Puerto Rico) | 3,664.39 mi (5,897.26 km) |
| Healdsburg to Cahokia (Illinois) | 1,755.64 mi (2,825.42 km) |
| Healdsburg to Calabasas (California) | 387.85 mi (624.18 km) |
| Healdsburg to Caldwell (Idaho) | 473.78 mi (762.48 km) |
| Healdsburg to Caledonia (Wisconsin) | 1,841.58 mi (2,963.73 km) |
| Healdsburg to Calera (Alabama) | 2,044.06 mi (3,289.59 km) |
| Healdsburg to Calexico (California) | 582.29 mi (937.11 km) |
| Healdsburg to Calhoun (Georgia) | 2,109.12 mi (3,394.30 km) |
| Healdsburg to California (Maryland) | 2,481.38 mi (3,993.39 km) |
| Healdsburg to California City (California) | 365.17 mi (587.69 km) |
| Healdsburg to Callaway (Florida) | 2,190.39 mi (3,525.09 km) |
| Healdsburg to Calumet City (Illinois) | 1,864.23 mi (3,000.18 km) |
| Healdsburg to Calverton (Maryland) | 2,444.27 mi (3,933.67 km) |
| Healdsburg to Camano (Washington) | 661.11 mi (1,063.95 km) |
