| Houghton Regis to Rivalta di Torino | 600.13 mi (965.82 km) |
| Houghton Regis to Rivarolo Canavese | 589.12 mi (948.09 km) |
| Houghton Regis to Rivoli | 598.09 mi (962.53 km) |
| Houghton Regis to Rocca di Papa | 936.41 mi (1,507.00 km) |
| Houghton Regis to Rocca Priora | 937.05 mi (1,508.03 km) |
| Houghton Regis to Roccapiemonte | 1,054.03 mi (1,696.30 km) |
| Houghton Regis to Roccastrada | 820.21 mi (1,320.01 km) |
| Houghton Regis to Romano di Lombardia | 642.46 mi (1,033.94 km) |
| Houghton Regis to Rome | 922.18 mi (1,484.11 km) |
| Houghton Regis to Roncade | 728.66 mi (1,172.67 km) |
| Houghton Regis to Ronchi dei Legionari | 761.04 mi (1,224.78 km) |
| Houghton Regis to Ronciglione | 892.06 mi (1,435.64 km) |
| Houghton Regis to Rosa | 702.40 mi (1,130.41 km) |
| Houghton Regis to Rosarno | 1,221.14 mi (1,965.23 km) |
| Houghton Regis to Rosignano Marittimo | 777.36 mi (1,251.04 km) |
