| Houghton Regis to Rosolini | 1,286.91 mi (2,071.09 km) |
| Houghton Regis to Rossano | 1,182.22 mi (1,902.59 km) |
| Houghton Regis to Rottofreno | 659.60 mi (1,061.52 km) |
| Houghton Regis to Rovato | 648.19 mi (1,043.16 km) |
| Houghton Regis to Roverbella | 688.99 mi (1,108.82 km) |
| Houghton Regis to Rovereto | 669.11 mi (1,076.83 km) |
| Houghton Regis to Rovigo | 733.42 mi (1,180.33 km) |
| Houghton Regis to Rozzano | 629.90 mi (1,013.72 km) |
| Houghton Regis to Rubano | 716.22 mi (1,152.64 km) |
| Houghton Regis to Rubiera | 720.67 mi (1,159.81 km) |
| Houghton Regis to Ruffano | 1,214.87 mi (1,955.14 km) |
| Houghton Regis to Russi | 776.36 mi (1,249.42 km) |
| Houghton Regis to Rutigliano | 1,118.72 mi (1,800.40 km) |
| Houghton Regis to Ruvo di Puglia | 1,094.84 mi (1,761.98 km) |
| Houghton Regis to Sabaudia | 971.78 mi (1,563.93 km) |
