| South Houston to Radauti | 5,960.20 mi (9,592.01 km) |
| South Houston to Ramnicu Sarat | 6,114.70 mi (9,840.65 km) |
| South Houston to Ramnicu Valcea | 6,029.98 mi (9,704.32 km) |
| South Houston to Rasnov | 6,047.36 mi (9,732.28 km) |
| South Houston to Reghin | 5,966.41 mi (9,602.00 km) |
| South Houston to Resita | 5,928.55 mi (9,541.08 km) |
| South Houston to Roman | 6,037.57 mi (9,716.54 km) |
| South Houston to Rosiori de Vede | 6,098.02 mi (9,813.81 km) |
| South Houston to Rovinari | 5,993.48 mi (9,645.58 km) |
| South Houston to Roznov | 6,027.39 mi (9,700.15 km) |
| South Houston to Sabaoani | 6,030.74 mi (9,705.55 km) |
| South Houston to Sacele | 6,055.13 mi (9,744.80 km) |
| South Houston to Sacueni | 5,846.52 mi (9,409.07 km) |
| South Houston to Salcea | 5,984.66 mi (9,631.38 km) |
| South Houston to Salonta | 5,854.42 mi (9,421.78 km) |
