| Oak Ridge to Cockermouth | 3,899.41 mi (6,275.50 km) |
| Oak Ridge to Colchester | 4,127.65 mi (6,642.81 km) |
| Oak Ridge to Coleford | 3,988.71 mi (6,419.20 km) |
| Oak Ridge to Colne | 3,961.55 mi (6,375.49 km) |
| Oak Ridge to Colwyn Bay | 3,913.56 mi (6,298.26 km) |
| Oak Ridge to Congleton | 3,974.70 mi (6,396.66 km) |
| Oak Ridge to Conisbrough | 4,006.56 mi (6,447.93 km) |
| Oak Ridge to Connahs Quay | 3,940.41 mi (6,341.48 km) |
| Oak Ridge to Consett | 3,954.06 mi (6,363.45 km) |
| Oak Ridge to Conwy | 3,908.62 mi (6,290.32 km) |
| Oak Ridge to Cookstown | 3,769.21 mi (6,065.96 km) |
| Oak Ridge to Corby | 4,049.64 mi (6,517.27 km) |
| Oak Ridge to Corfe Mullen | 4,036.34 mi (6,495.87 km) |
| Oak Ridge to Corsham | 4,014.22 mi (6,460.26 km) |
| Oak Ridge to Coseley | 3,993.34 mi (6,426.65 km) |
