| Donegal to Ratingen | 662.55 mi (1,066.27 km) |
| Donegal to Ratzeburg | 763.20 mi (1,228.26 km) |
| Donegal to Raubling | 990.09 mi (1,593.40 km) |
| Donegal to Rauenberg | 804.00 mi (1,293.92 km) |
| Donegal to Raunheim | 766.63 mi (1,233.77 km) |
| Donegal to Ravensburg | 898.17 mi (1,445.47 km) |
| Donegal to Recke | 667.66 mi (1,074.49 km) |
| Donegal to Recklinghausen | 666.23 mi (1,072.20 km) |
| Donegal to Regen | 983.94 mi (1,583.50 km) |
| Donegal to Regensburg | 941.66 mi (1,515.46 km) |
| Donegal to Regenstauf | 939.49 mi (1,511.97 km) |
| Donegal to Rehau | 896.67 mi (1,443.05 km) |
| Donegal to Rehburg-Loccum | 724.97 mi (1,166.73 km) |
| Donegal to Rehlingen-Siersburg | 725.17 mi (1,167.05 km) |
| Donegal to Reichelsheim | 792.32 mi (1,275.11 km) |
