| Key Largo to Cockermouth | 4,309.67 mi (6,935.74 km) |
| Key Largo to Colchester | 4,509.33 mi (7,257.06 km) |
| Key Largo to Coleford | 4,361.79 mi (7,019.62 km) |
| Key Largo to Colne | 4,362.98 mi (7,021.54 km) |
| Key Largo to Colwyn Bay | 4,304.93 mi (6,928.11 km) |
| Key Largo to Congleton | 4,366.87 mi (7,027.79 km) |
| Key Largo to Conisbrough | 4,404.69 mi (7,088.66 km) |
| Key Largo to Connahs Quay | 4,331.88 mi (6,971.48 km) |
| Key Largo to Consett | 4,369.14 mi (7,031.46 km) |
| Key Largo to Conwy | 4,299.65 mi (6,919.62 km) |
| Key Largo to Cookstown | 4,174.83 mi (6,718.74 km) |
| Key Largo to Corby | 4,435.74 mi (7,138.63 km) |
| Key Largo to Corfe Mullen | 4,396.89 mi (7,076.10 km) |
| Key Largo to Corsham | 4,383.34 mi (7,054.31 km) |
| Key Largo to Coseley | 4,377.60 mi (7,045.07 km) |
