| Pittsburgh to Rheinbach | 4,019.37 mi (6,468.55 km) |
| Pittsburgh to Rheinberg | 3,977.90 mi (6,401.81 km) |
| Pittsburgh to Rheine | 3,987.62 mi (6,417.45 km) |
| Pittsburgh to Rheinfelden (Baden) | 4,151.53 mi (6,681.24 km) |
| Pittsburgh to Ribnitz-Damgarten | 4,111.36 mi (6,616.59 km) |
| Pittsburgh to Richterich | 3,979.19 mi (6,403.89 km) |
| Pittsburgh to Riedlingen | 4,199.80 mi (6,758.93 km) |
| Pittsburgh to Riegelsberg | 4,060.76 mi (6,535.17 km) |
| Pittsburgh to Rielasingen-Worblingen | 4,188.44 mi (6,740.65 km) |
| Pittsburgh to Riesa | 4,240.30 mi (6,824.11 km) |
| Pittsburgh to Rietberg | 4,040.53 mi (6,502.60 km) |
| Pittsburgh to Rinteln | 4,052.90 mi (6,522.51 km) |
| Pittsburgh to Ritterhude | 4,009.97 mi (6,453.42 km) |
| Pittsburgh to Rodenbach | 4,116.22 mi (6,624.42 km) |
| Pittsburgh to Rodental | 4,190.73 mi (6,744.32 km) |
