| Effingham to Cockermouth | 3,901.88 mi (6,279.47 km) |
| Effingham to Colchester | 4,140.90 mi (6,664.14 km) |
| Effingham to Coleford | 4,007.98 mi (6,450.22 km) |
| Effingham to Colne | 3,967.49 mi (6,385.06 km) |
| Effingham to Colwyn Bay | 3,925.09 mi (6,316.82 km) |
| Effingham to Congleton | 3,984.98 mi (6,413.21 km) |
| Effingham to Conisbrough | 4,013.49 mi (6,459.10 km) |
| Effingham to Connahs Quay | 3,951.52 mi (6,359.35 km) |
| Effingham to Consett | 3,953.37 mi (6,362.34 km) |
| Effingham to Conwy | 3,920.39 mi (6,309.27 km) |
| Effingham to Cookstown | 3,775.86 mi (6,076.66 km) |
| Effingham to Corby | 4,061.82 mi (6,536.88 km) |
| Effingham to Corfe Mullen | 4,060.89 mi (6,535.38 km) |
| Effingham to Corsham | 4,035.02 mi (6,493.73 km) |
| Effingham to Coseley | 4,007.19 mi (6,448.94 km) |
