| Letchworth to Quarteira | 1,099.14 mi (1,768.89 km) |
| Letchworth to Queluz | 1,011.87 mi (1,628.45 km) |
| Letchworth to Reguengos de Monsaraz | 1,000.96 mi (1,610.89 km) |
| Letchworth to Resende | 835.16 mi (1,344.06 km) |
| Letchworth to Ribeira Brava | 1,577.48 mi (2,538.71 km) |
| Letchworth to Ribeira Grande | 1,563.82 mi (2,516.72 km) |
| Letchworth to Rio de Mouro | 1,012.13 mi (1,628.86 km) |
| Letchworth to Rio Maior | 967.89 mi (1,557.66 km) |
| Letchworth to Rio Tinto | 843.31 mi (1,357.17 km) |
| Letchworth to Sabugal | 866.83 mi (1,395.03 km) |
| Letchworth to Sacavem | 1,005.82 mi (1,618.72 km) |
| Letchworth to Salvaterra de Magos | 985.09 mi (1,585.35 km) |
| Letchworth to Santa Comba Dao | 883.21 mi (1,421.39 km) |
| Letchworth to Santa Cruz | 1,570.84 mi (2,528.02 km) |
| Letchworth to Santa Iria da Azoia | 1,002.15 mi (1,612.80 km) |
