| Houston to Radauti | 5,958.66 mi (9,589.54 km) |
| Houston to Ramnicu Sarat | 6,113.45 mi (9,838.65 km) |
| Houston to Ramnicu Valcea | 6,029.06 mi (9,702.84 km) |
| Houston to Rasnov | 6,046.24 mi (9,730.48 km) |
| Houston to Reghin | 5,965.17 mi (9,600.01 km) |
| Houston to Resita | 5,927.85 mi (9,539.95 km) |
| Houston to Roman | 6,036.08 mi (9,714.14 km) |
| Houston to Rosiori de Vede | 6,097.20 mi (9,812.49 km) |
| Houston to Rovinari | 5,992.72 mi (9,644.36 km) |
| Houston to Roznov | 6,025.96 mi (9,697.85 km) |
| Houston to Sabaoani | 6,029.25 mi (9,703.14 km) |
| Houston to Sacele | 6,053.99 mi (9,742.95 km) |
| Houston to Sacueni | 5,845.45 mi (9,407.34 km) |
| Houston to Salcea | 5,983.11 mi (9,628.89 km) |
| Houston to Salonta | 5,853.48 mi (9,420.27 km) |
