| Healdsburg to Cockermouth | 5,067.55 mi (8,155.44 km) |
| Healdsburg to Colchester | 5,327.56 mi (8,573.89 km) |
| Healdsburg to Coleford | 5,230.27 mi (8,417.31 km) |
| Healdsburg to Colne | 5,140.81 mi (8,273.33 km) |
| Healdsburg to Colwyn Bay | 5,124.59 mi (8,247.23 km) |
| Healdsburg to Congleton | 5,173.98 mi (8,326.72 km) |
| Healdsburg to Conisbrough | 5,186.47 mi (8,346.81 km) |
| Healdsburg to Connahs Quay | 5,146.88 mi (8,283.11 km) |
| Healdsburg to Consett | 5,101.25 mi (8,209.67 km) |
| Healdsburg to Conwy | 5,121.26 mi (8,241.88 km) |
| Healdsburg to Cookstown | 4,970.34 mi (7,999.00 km) |
| Healdsburg to Corby | 5,251.35 mi (8,451.22 km) |
| Healdsburg to Corfe Mullen | 5,299.06 mi (8,528.01 km) |
| Healdsburg to Corsham | 5,260.87 mi (8,466.55 km) |
| Healdsburg to Coseley | 5,208.27 mi (8,381.91 km) |
