| Houghton Regis to Racale | 1,210.52 mi (1,948.15 km) |
| Houghton Regis to Racconigi | 619.92 mi (997.66 km) |
| Houghton Regis to Raffadali | 1,212.36 mi (1,951.11 km) |
| Houghton Regis to Ragusa | 1,274.26 mi (2,050.72 km) |
| Houghton Regis to Ramacca | 1,246.30 mi (2,005.73 km) |
| Houghton Regis to Randazzo | 1,224.33 mi (1,970.37 km) |
| Houghton Regis to Rapallo | 687.94 mi (1,107.14 km) |
| Houghton Regis to Ravanusa | 1,232.54 mi (1,983.58 km) |
| Houghton Regis to Ravenna | 780.12 mi (1,255.48 km) |
| Houghton Regis to Recanati | 877.24 mi (1,411.78 km) |
| Houghton Regis to Recco | 684.54 mi (1,101.66 km) |
| Houghton Regis to Reggello | 795.45 mi (1,280.15 km) |
| Houghton Regis to Reggio di Calabria | 1,232.01 mi (1,982.73 km) |
| Houghton Regis to Reggio Emilia | 713.18 mi (1,147.75 km) |
| Houghton Regis to Reggiolo | 708.18 mi (1,139.71 km) |
