| Gretna to Rhondda | 4,491.72 mi (7,228.72 km) |
| Gretna to Rhosllanerchrugog | 4,478.08 mi (7,206.77 km) |
| Gretna to Rhyl | 4,454.94 mi (7,169.53 km) |
| Gretna to Rhymney | 4,494.27 mi (7,232.83 km) |
| Gretna to Richmond | 4,622.27 mi (7,438.83 km) |
| Gretna to Rickmansworth | 4,611.40 mi (7,421.32 km) |
| Gretna to Ripley | 4,542.45 mi (7,310.36 km) |
| Gretna to Ripon | 4,514.86 mi (7,265.97 km) |
| Gretna to Risca | 4,505.25 mi (7,250.49 km) |
| Gretna to Rochdale | 4,500.96 mi (7,243.60 km) |
| Gretna to Rochester | 4,656.64 mi (7,494.13 km) |
| Gretna to Rock Ferry | 4,472.56 mi (7,197.89 km) |
| Gretna to Rogerstone | 4,507.14 mi (7,253.53 km) |
| Gretna to Romford | 4,638.93 mi (7,465.64 km) |
| Gretna to Romsey | 4,584.05 mi (7,377.31 km) |
