| Silver Spring to Quarteira | 3,659.01 mi (5,888.61 km) |
| Silver Spring to Queluz | 3,553.93 mi (5,719.50 km) |
| Silver Spring to Reguengos de Monsaraz | 3,648.98 mi (5,872.46 km) |
| Silver Spring to Resende | 3,555.46 mi (5,721.97 km) |
| Silver Spring to Ribeira Brava | 3,326.88 mi (5,354.09 km) |
| Silver Spring to Ribeira Grande | 2,751.59 mi (4,428.25 km) |
| Silver Spring to Rio de Mouro | 3,550.17 mi (5,713.44 km) |
| Silver Spring to Rio Maior | 3,554.72 mi (5,720.77 km) |
| Silver Spring to Rio Tinto | 3,524.81 mi (5,672.64 km) |
| Silver Spring to Sabugal | 3,617.98 mi (5,822.57 km) |
| Silver Spring to Sacavem | 3,560.74 mi (5,730.47 km) |
| Silver Spring to Salvaterra de Magos | 3,570.64 mi (5,746.39 km) |
| Silver Spring to Santa Comba Dao | 3,566.42 mi (5,739.60 km) |
| Silver Spring to Santa Cruz | 3,340.00 mi (5,375.22 km) |
| Silver Spring to Santa Iria da Azoia | 3,560.19 mi (5,729.57 km) |
