| Effingham to Cosham | 4,096.29 mi (6,592.35 km) |
| Effingham to Costessey | 4,129.33 mi (6,645.51 km) |
| Effingham to Cottingham | 4,035.27 mi (6,494.14 km) |
| Effingham to Coulsdon | 4,118.14 mi (6,627.51 km) |
| Effingham to Coventry | 4,033.17 mi (6,490.77 km) |
| Effingham to Cowdenbeath | 3,865.60 mi (6,221.08 km) |
| Effingham to Cowes | 4,089.54 mi (6,581.49 km) |
| Effingham to Cowley | 4,098.64 mi (6,596.12 km) |
| Effingham to Cowley | 4,064.13 mi (6,540.58 km) |
| Effingham to Cramlington | 3,956.09 mi (6,366.70 km) |
| Effingham to Cranleigh | 4,110.49 mi (6,615.20 km) |
| Effingham to Crawley | 4,122.67 mi (6,634.79 km) |
| Effingham to Crayford | 4,126.65 mi (6,641.21 km) |
| Effingham to Crewe | 3,978.25 mi (6,402.37 km) |
| Effingham to Crigglestone | 3,997.78 mi (6,433.81 km) |
