| Duluth to Rhondda | 3,765.74 mi (6,060.37 km) |
| Duluth to Rhosllanerchrugog | 3,727.07 mi (5,998.15 km) |
| Duluth to Rhyl | 3,700.71 mi (5,955.71 km) |
| Duluth to Rhymney | 3,765.24 mi (6,059.56 km) |
| Duluth to Richmond | 3,883.35 mi (6,249.65 km) |
| Duluth to Rickmansworth | 3,870.39 mi (6,228.78 km) |
| Duluth to Ripley | 3,783.23 mi (6,088.52 km) |
| Duluth to Ripon | 3,738.63 mi (6,016.74 km) |
| Duluth to Risca | 3,777.81 mi (6,079.79 km) |
| Duluth to Rochdale | 3,736.03 mi (6,012.56 km) |
| Duluth to Rochester | 3,914.89 mi (6,300.41 km) |
| Duluth to Rock Ferry | 3,715.36 mi (5,979.30 km) |
| Duluth to Rogerstone | 3,779.80 mi (6,083.00 km) |
| Duluth to Romford | 3,895.63 mi (6,269.41 km) |
| Duluth to Romsey | 3,858.84 mi (6,210.21 km) |
