| Irthlingborough to Ratingen | 326.43 mi (525.34 km) |
| Irthlingborough to Ratzeburg | 481.32 mi (774.60 km) |
| Irthlingborough to Raubling | 644.13 mi (1,036.63 km) |
| Irthlingborough to Rauenberg | 457.98 mi (737.04 km) |
| Irthlingborough to Raunheim | 423.43 mi (681.44 km) |
| Irthlingborough to Ravensburg | 550.75 mi (886.35 km) |
| Irthlingborough to Recke | 351.53 mi (565.73 km) |
| Irthlingborough to Recklinghausen | 334.85 mi (538.89 km) |
| Irthlingborough to Regen | 644.19 mi (1,036.73 km) |
| Irthlingborough to Regensburg | 600.12 mi (965.80 km) |
| Irthlingborough to Regenstauf | 598.60 mi (963.36 km) |
| Irthlingborough to Rehau | 563.48 mi (906.84 km) |
| Irthlingborough to Rehburg-Loccum | 413.95 mi (666.19 km) |
| Irthlingborough to Rehlingen-Siersburg | 377.77 mi (607.96 km) |
| Irthlingborough to Reichelsheim | 448.25 mi (721.40 km) |
