| Pittsburgh to Reichenbach/Vogtland | 4,226.62 mi (6,802.10 km) |
| Pittsburgh to Reinbek | 4,054.91 mi (6,525.75 km) |
| Pittsburgh to Reinfeld | 4,053.31 mi (6,523.16 km) |
| Pittsburgh to Reinheim | 4,118.79 mi (6,628.56 km) |
| Pittsburgh to Reiskirchen | 4,093.90 mi (6,588.49 km) |
| Pittsburgh to Rellingen | 4,034.71 mi (6,493.25 km) |
| Pittsburgh to Remagen | 4,032.06 mi (6,488.97 km) |
| Pittsburgh to Remscheid | 4,012.17 mi (6,456.97 km) |
| Pittsburgh to Rendsburg | 4,009.26 mi (6,452.28 km) |
| Pittsburgh to Renningen | 4,157.78 mi (6,691.30 km) |
| Pittsburgh to Reutlingen | 4,178.49 mi (6,724.62 km) |
| Pittsburgh to Rhaude | 3,965.54 mi (6,381.92 km) |
| Pittsburgh to Rheda-Wiedenbruck | 4,034.15 mi (6,492.33 km) |
| Pittsburgh to Rhede | 3,973.15 mi (6,394.16 km) |
| Pittsburgh to Rheinau | 4,120.93 mi (6,631.99 km) |
