| Healdsburg to Clacton-on-Sea | 5,339.61 mi (8,593.27 km) |
| Healdsburg to Clay Cross | 5,196.98 mi (8,363.73 km) |
| Healdsburg to Clayton | 5,154.73 mi (8,295.73 km) |
| Healdsburg to Clayton le Moors | 5,138.85 mi (8,270.18 km) |
| Healdsburg to Cleckheaton | 5,160.24 mi (8,304.61 km) |
| Healdsburg to Cleethorpes | 5,216.56 mi (8,395.24 km) |
| Healdsburg to Clevedon | 5,240.65 mi (8,434.00 km) |
| Healdsburg to Clifton | 5,216.74 mi (8,395.53 km) |
| Healdsburg to Clifton | 5,165.39 mi (8,312.89 km) |
| Healdsburg to Cliftonville | 5,367.87 mi (8,638.75 km) |
| Healdsburg to Clitheroe | 5,133.89 mi (8,262.19 km) |
| Healdsburg to Clydebank | 4,978.55 mi (8,012.21 km) |
| Healdsburg to Coalville | 5,220.26 mi (8,401.20 km) |
| Healdsburg to Coatbridge | 4,990.78 mi (8,031.88 km) |
| Healdsburg to Cobham | 5,318.57 mi (8,559.42 km) |
