| Oak Ridge to Rhondda | 3,960.01 mi (6,373.01 km) |
| Oak Ridge to Rhosllanerchrugog | 3,944.94 mi (6,348.76 km) |
| Oak Ridge to Rhyl | 3,921.61 mi (6,311.21 km) |
| Oak Ridge to Rhymney | 3,962.37 mi (6,376.82 km) |
| Oak Ridge to Richmond | 4,090.03 mi (6,582.27 km) |
| Oak Ridge to Rickmansworth | 4,079.01 mi (6,564.53 km) |
| Oak Ridge to Ripley | 4,009.02 mi (6,451.89 km) |
| Oak Ridge to Ripon | 3,980.73 mi (6,406.37 km) |
| Oak Ridge to Risca | 3,973.47 mi (6,394.68 km) |
| Oak Ridge to Rochdale | 3,967.23 mi (6,384.64 km) |
| Oak Ridge to Rochester | 4,124.29 mi (6,637.41 km) |
| Oak Ridge to Rock Ferry | 3,939.12 mi (6,339.40 km) |
| Oak Ridge to Rogerstone | 3,975.37 mi (6,397.74 km) |
| Oak Ridge to Romford | 4,106.47 mi (6,608.72 km) |
| Oak Ridge to Romsey | 4,052.59 mi (6,522.01 km) |
