| Mercer Island to Rhondda | 4,689.81 mi (7,547.51 km) |
| Mercer Island to Rhosllanerchrugog | 4,625.54 mi (7,444.09 km) |
| Mercer Island to Rhyl | 4,597.74 mi (7,399.35 km) |
| Mercer Island to Rhymney | 4,685.87 mi (7,541.17 km) |
| Mercer Island to Richmond | 4,782.19 mi (7,696.20 km) |
| Mercer Island to Rickmansworth | 4,767.90 mi (7,673.19 km) |
| Mercer Island to Ripley | 4,666.77 mi (7,510.44 km) |
| Mercer Island to Ripon | 4,605.33 mi (7,411.57 km) |
| Mercer Island to Risca | 4,699.15 mi (7,562.55 km) |
| Mercer Island to Rochdale | 4,616.93 mi (7,430.23 km) |
| Mercer Island to Rochester | 4,807.65 mi (7,737.17 km) |
| Mercer Island to Rock Ferry | 4,607.51 mi (7,415.07 km) |
| Mercer Island to Rogerstone | 4,701.09 mi (7,565.68 km) |
| Mercer Island to Romford | 4,788.22 mi (7,705.89 km) |
| Mercer Island to Romsey | 4,775.69 mi (7,685.73 km) |
