| South Houston to Quarteira | 4,874.19 mi (7,844.25 km) |
| South Houston to Queluz | 4,771.21 mi (7,678.51 km) |
| South Houston to Reguengos de Monsaraz | 4,866.57 mi (7,831.99 km) |
| South Houston to Resende | 4,774.92 mi (7,684.49 km) |
| South Houston to Ribeira Brava | 4,515.31 mi (7,266.69 km) |
| South Houston to Ribeira Grande | 3,953.36 mi (6,362.32 km) |
| South Houston to Rio de Mouro | 4,767.44 mi (7,672.45 km) |
| South Houston to Rio Maior | 4,772.84 mi (7,681.15 km) |
| South Houston to Rio Tinto | 4,744.25 mi (7,635.13 km) |
| South Houston to Sabugal | 4,837.29 mi (7,784.87 km) |
| South Houston to Sacavem | 4,778.15 mi (7,689.69 km) |
| South Houston to Salvaterra de Magos | 4,788.46 mi (7,706.28 km) |
| South Houston to Santa Comba Dao | 4,785.61 mi (7,701.70 km) |
| South Houston to Santa Cruz | 4,528.91 mi (7,288.57 km) |
| South Houston to Santa Iria da Azoia | 4,777.67 mi (7,688.91 km) |
