| Pittsburgh to Ratingen | 3,995.03 mi (6,429.38 km) |
| Pittsburgh to Ratzeburg | 4,067.20 mi (6,545.52 km) |
| Pittsburgh to Raubling | 4,317.83 mi (6,948.87 km) |
| Pittsburgh to Rauenberg | 4,132.03 mi (6,649.86 km) |
| Pittsburgh to Raunheim | 4,097.68 mi (6,594.59 km) |
| Pittsburgh to Ravensburg | 4,218.03 mi (6,788.26 km) |
| Pittsburgh to Recke | 3,995.83 mi (6,430.67 km) |
| Pittsburgh to Recklinghausen | 3,998.41 mi (6,434.82 km) |
| Pittsburgh to Regen | 4,316.37 mi (6,946.52 km) |
| Pittsburgh to Regensburg | 4,273.67 mi (6,877.81 km) |
| Pittsburgh to Regenstauf | 4,271.69 mi (6,874.63 km) |
| Pittsburgh to Rehau | 4,228.38 mi (6,804.92 km) |
| Pittsburgh to Rehburg-Loccum | 4,049.50 mi (6,517.05 km) |
| Pittsburgh to Rehlingen-Siersburg | 4,048.05 mi (6,514.70 km) |
| Pittsburgh to Reichelsheim | 4,122.79 mi (6,634.99 km) |
