| Olbia to Queluz | 1,004.87 mi (1,617.18 km) |
| Olbia to Reguengos de Monsaraz | 920.70 mi (1,481.72 km) |
| Olbia to Resende | 909.08 mi (1,463.02 km) |
| Olbia to Ribeira Brava | 1,567.56 mi (2,522.75 km) |
| Olbia to Ribeira Grande | 1,870.12 mi (3,009.66 km) |
| Olbia to Rio de Mouro | 1,008.02 mi (1,622.26 km) |
| Olbia to Rio Maior | 978.15 mi (1,574.17 km) |
| Olbia to Rio Tinto | 939.55 mi (1,512.06 km) |
| Olbia to Sabugal | 869.11 mi (1,398.70 km) |
| Olbia to Sacavem | 995.72 mi (1,602.46 km) |
| Olbia to Salvaterra de Magos | 975.21 mi (1,569.46 km) |
| Olbia to Santa Comba Dao | 922.50 mi (1,484.63 km) |
| Olbia to Santa Cruz | 1,554.84 mi (2,502.27 km) |
| Olbia to Santa Iria da Azoia | 993.94 mi (1,599.59 km) |
| Olbia to Santarem | 966.73 mi (1,555.80 km) |
