| Letterkenny to Ratingen | 653.20 mi (1,051.22 km) |
| Letterkenny to Ratzeburg | 747.02 mi (1,202.21 km) |
| Letterkenny to Raubling | 983.16 mi (1,582.25 km) |
| Letterkenny to Rauenberg | 797.31 mi (1,283.15 km) |
| Letterkenny to Raunheim | 758.74 mi (1,221.08 km) |
| Letterkenny to Ravensburg | 893.19 mi (1,437.45 km) |
| Letterkenny to Recke | 655.32 mi (1,054.64 km) |
| Letterkenny to Recklinghausen | 656.01 mi (1,055.75 km) |
| Letterkenny to Regen | 974.62 mi (1,568.51 km) |
| Letterkenny to Regensburg | 932.93 mi (1,501.41 km) |
| Letterkenny to Regenstauf | 930.57 mi (1,497.61 km) |
| Letterkenny to Rehau | 886.02 mi (1,425.92 km) |
| Letterkenny to Rehburg-Loccum | 711.75 mi (1,145.44 km) |
| Letterkenny to Rehlingen-Siersburg | 720.08 mi (1,158.86 km) |
| Letterkenny to Reichelsheim | 784.70 mi (1,262.86 km) |
