| Houghton Regis to Rossington | 110.91 mi (178.50 km) |
| Houghton Regis to Rosyth | 308.79 mi (496.95 km) |
| Houghton Regis to Rotherham | 111.06 mi (178.73 km) |
| Houghton Regis to Rothwell | 133.52 mi (214.87 km) |
| Houghton Regis to Rottingdean | 77.81 mi (125.22 km) |
| Houghton Regis to Rowley Regis | 76.17 mi (122.58 km) |
| Houghton Regis to Royal Leamington Spa | 50.65 mi (81.51 km) |
| Houghton Regis to Royal Tunbridge Wells | 63.18 mi (101.67 km) |
| Houghton Regis to Royal Wootton Bassett | 64.20 mi (103.33 km) |
| Houghton Regis to Royston | 124.06 mi (199.66 km) |
| Houghton Regis to Royston | 23.64 mi (38.05 km) |
| Houghton Regis to Royton | 132.84 mi (213.78 km) |
| Houghton Regis to Rugby | 44.83 mi (72.14 km) |
| Houghton Regis to Rugeley | 84.04 mi (135.25 km) |
| Houghton Regis to Ruislip | 22.99 mi (37.00 km) |
