| Healdsburg to Carlsbad (California) | 491.66 mi (791.26 km) |
| Healdsburg to Carlsbad (New Mexico) | 1,129.68 mi (1,818.05 km) |
| Healdsburg to Carmel (Indiana) | 1,951.73 mi (3,141.00 km) |
| Healdsburg to Carmichael (California) | 83.06 mi (133.68 km) |
| Healdsburg to Carney (Maryland) | 2,460.52 mi (3,959.83 km) |
| Healdsburg to Carnot-Moon (Pennsylvania) | 2,252.95 mi (3,625.78 km) |
| Healdsburg to Carol Stream (Illinois) | 1,832.60 mi (2,949.28 km) |
| Healdsburg to Carolina (Puerto Rico) | 3,660.71 mi (5,891.35 km) |
| Healdsburg to Carolina Forest (South Carolina) | 2,450.20 mi (3,943.21 km) |
| Healdsburg to Carpentersville (Illinois) | 1,823.40 mi (2,934.48 km) |
| Healdsburg to Carpinteria (California) | 346.26 mi (557.26 km) |
| Healdsburg to Carrboro (North Carolina) | 2,391.33 mi (3,848.48 km) |
| Healdsburg to Carroll (Iowa) | 1,486.76 mi (2,392.70 km) |
| Healdsburg to Carrollton (Georgia) | 2,122.51 mi (3,415.84 km) |
| Healdsburg to Carrollton (Texas) | 1,500.50 mi (2,414.82 km) |
