| Olton to Quarteira | 1,104.87 mi (1,778.11 km) |
| Olton to Queluz | 1,010.77 mi (1,626.68 km) |
| Olton to Reguengos de Monsaraz | 1,006.98 mi (1,620.58 km) |
| Olton to Resende | 834.66 mi (1,343.26 km) |
| Olton to Ribeira Brava | 1,562.68 mi (2,514.90 km) |
| Olton to Ribeira Grande | 1,522.37 mi (2,450.03 km) |
| Olton to Rio de Mouro | 1,010.75 mi (1,626.65 km) |
| Olton to Rio Maior | 966.99 mi (1,556.23 km) |
| Olton to Rio Tinto | 840.09 mi (1,351.99 km) |
| Olton to Sabugal | 871.63 mi (1,402.75 km) |
| Olton to Sacavem | 1,005.25 mi (1,617.80 km) |
| Olton to Salvaterra de Magos | 985.35 mi (1,585.77 km) |
| Olton to Santa Comba Dao | 883.54 mi (1,421.92 km) |
| Olton to Santa Cruz | 1,556.66 mi (2,505.21 km) |
| Olton to Santa Iria da Azoia | 1,001.55 mi (1,611.84 km) |
