| Oak Ridge to Cromer | 4,117.85 mi (6,627.04 km) |
| Oak Ridge to Crosby | 3,935.72 mi (6,333.93 km) |
| Oak Ridge to Crowborough | 4,118.34 mi (6,627.83 km) |
| Oak Ridge to Croxley Green | 4,079.64 mi (6,565.55 km) |
| Oak Ridge to Croydon | 4,099.76 mi (6,597.92 km) |
| Oak Ridge to Cudworth | 3,997.06 mi (6,432.64 km) |
| Oak Ridge to Culcheth | 3,956.56 mi (6,367.46 km) |
| Oak Ridge to Cullercoats | 3,965.30 mi (6,381.53 km) |
| Oak Ridge to Cumbernauld | 3,851.37 mi (6,198.18 km) |
| Oak Ridge to Cumnock | 3,850.15 mi (6,196.21 km) |
| Oak Ridge to Cupar | 3,881.03 mi (6,245.91 km) |
| Oak Ridge to Cwmbran | 3,975.33 mi (6,397.68 km) |
| Oak Ridge to Dagenham | 4,105.85 mi (6,607.73 km) |
| Oak Ridge to Dalkeith | 3,887.19 mi (6,255.82 km) |
| Oak Ridge to Darfield | 3,999.25 mi (6,436.18 km) |
