| River Grove to Rhondda | 3,823.86 mi (6,153.90 km) |
| River Grove to Rhosllanerchrugog | 3,796.32 mi (6,109.58 km) |
| River Grove to Rhyl | 3,771.21 mi (6,069.18 km) |
| River Grove to Rhymney | 3,824.74 mi (6,155.32 km) |
| River Grove to Richmond | 3,948.39 mi (6,354.32 km) |
| River Grove to Rickmansworth | 3,936.27 mi (6,334.81 km) |
| River Grove to Ripley | 3,856.76 mi (6,206.86 km) |
| River Grove to Ripon | 3,819.75 mi (6,147.29 km) |
| River Grove to Risca | 3,836.69 mi (6,174.56 km) |
| River Grove to Rochdale | 3,811.83 mi (6,134.54 km) |
| River Grove to Rochester | 3,981.49 mi (6,407.59 km) |
| River Grove to Rock Ferry | 3,787.37 mi (6,095.19 km) |
| River Grove to Rogerstone | 3,838.66 mi (6,177.73 km) |
| River Grove to Romford | 3,962.78 mi (6,377.47 km) |
| River Grove to Romsey | 3,917.44 mi (6,304.51 km) |
