| Healdsburg to Clarksdale (Mississippi) | 1,812.18 mi (2,916.42 km) |
| Healdsburg to Clarkston (Georgia) | 2,162.47 mi (3,480.16 km) |
| Healdsburg to Clarksville (Indiana) | 1,992.97 mi (3,207.38 km) |
| Healdsburg to Clarksville (Tennessee) | 1,937.80 mi (3,118.59 km) |
| Healdsburg to Clawson (Michigan) | 2,082.31 mi (3,351.16 km) |
| Healdsburg to Clay (Alabama) | 2,037.51 mi (3,279.06 km) |
| Healdsburg to Clayton (California) | 69.22 mi (111.41 km) |
| Healdsburg to Clayton (Missouri) | 1,746.63 mi (2,810.92 km) |
| Healdsburg to Clayton (North Carolina) | 2,431.05 mi (3,912.40 km) |
| Healdsburg to Clayton (Ohio) | 2,047.74 mi (3,295.53 km) |
| Healdsburg to Clearfield (Utah) | 599.50 mi (964.80 km) |
| Healdsburg to Clearlake (California) | 26.40 mi (42.48 km) |
| Healdsburg to Clearwater (Florida) | 2,408.40 mi (3,875.94 km) |
| Healdsburg to Cleburne (Texas) | 1,490.19 mi (2,398.22 km) |
| Healdsburg to Clemmons (North Carolina) | 2,319.94 mi (3,733.59 km) |
