| Houston to Rheinbach | 5,150.83 mi (8,289.46 km) |
| Houston to Rheinberg | 5,107.67 mi (8,220.00 km) |
| Houston to Rheine | 5,114.97 mi (8,231.75 km) |
| Houston to Rheinfelden (Baden) | 5,287.16 mi (8,508.86 km) |
| Houston to Ribnitz-Damgarten | 5,227.55 mi (8,412.93 km) |
| Houston to Richterich | 5,110.87 mi (8,225.16 km) |
| Houston to Riedlingen | 5,333.92 mi (8,584.11 km) |
| Houston to Riegelsberg | 5,194.57 mi (8,359.85 km) |
| Houston to Rielasingen-Worblingen | 5,323.43 mi (8,567.23 km) |
| Houston to Riesa | 5,364.85 mi (8,633.89 km) |
| Houston to Rietberg | 5,168.29 mi (8,317.56 km) |
| Houston to Rinteln | 5,179.10 mi (8,334.96 km) |
| Houston to Ritterhude | 5,133.64 mi (8,261.80 km) |
| Houston to Rodenbach | 5,247.23 mi (8,444.60 km) |
| Houston to Rodental | 5,319.89 mi (8,561.53 km) |
