| Piqua to Rhondda | 3,763.66 mi (6,057.02 km) |
| Piqua to Rhosllanerchrugog | 3,742.44 mi (6,022.88 km) |
| Piqua to Rhyl | 3,718.20 mi (5,983.87 km) |
| Piqua to Rhymney | 3,765.30 mi (6,059.66 km) |
| Piqua to Richmond | 3,891.25 mi (6,262.36 km) |
| Piqua to Rickmansworth | 3,879.67 mi (6,243.72 km) |
| Piqua to Ripley | 3,804.90 mi (6,123.40 km) |
| Piqua to Ripon | 3,772.37 mi (6,071.05 km) |
| Piqua to Risca | 3,776.84 mi (6,078.24 km) |
| Piqua to Rochdale | 3,761.51 mi (6,053.57 km) |
| Piqua to Rochester | 3,925.01 mi (6,316.70 km) |
| Piqua to Rock Ferry | 3,735.10 mi (6,011.07 km) |
| Piqua to Rogerstone | 3,778.78 mi (6,081.36 km) |
| Piqua to Romford | 3,906.72 mi (6,287.25 km) |
| Piqua to Romsey | 3,856.93 mi (6,207.13 km) |
