| Houghton Regis to Redondela | 764.91 mi (1,231.00 km) |
| Houghton Regis to Reinosa | 637.60 mi (1,026.12 km) |
| Houghton Regis to Requena | 858.43 mi (1,381.51 km) |
| Houghton Regis to Reus | 746.68 mi (1,201.67 km) |
| Houghton Regis to Rianxo | 747.18 mi (1,202.46 km) |
| Houghton Regis to Ribadeo | 652.22 mi (1,049.64 km) |
| Houghton Regis to Rincon de la Victoria | 1,065.29 mi (1,714.42 km) |
| Houghton Regis to Ripoll | 682.34 mi (1,098.13 km) |
| Houghton Regis to Ripollet | 730.06 mi (1,174.93 km) |
| Houghton Regis to Rojales | 954.59 mi (1,536.27 km) |
| Houghton Regis to Ronda | 1,072.16 mi (1,725.48 km) |
| Houghton Regis to Roquetas de Mar | 1,051.02 mi (1,691.46 km) |
| Houghton Regis to Rosas | 688.23 mi (1,107.60 km) |
| Houghton Regis to Rubi | 729.32 mi (1,173.72 km) |
| Houghton Regis to Rute | 1,025.07 mi (1,649.69 km) |
