| Herndon to Quarteira | 3,678.16 mi (5,919.43 km) |
| Herndon to Queluz | 3,572.94 mi (5,750.09 km) |
| Herndon to Reguengos de Monsaraz | 3,667.96 mi (5,903.01 km) |
| Herndon to Resende | 3,574.13 mi (5,752.01 km) |
| Herndon to Ribeira Brava | 3,346.57 mi (5,385.79 km) |
| Herndon to Ribeira Grande | 2,771.15 mi (4,459.74 km) |
| Herndon to Rio de Mouro | 3,569.18 mi (5,744.04 km) |
| Herndon to Rio Maior | 3,573.65 mi (5,751.23 km) |
| Herndon to Rio Tinto | 3,543.50 mi (5,702.71 km) |
| Herndon to Sabugal | 3,636.71 mi (5,852.72 km) |
| Herndon to Sacavem | 3,579.75 mi (5,761.04 km) |
| Herndon to Salvaterra de Magos | 3,589.61 mi (5,776.91 km) |
| Herndon to Santa Comba Dao | 3,585.19 mi (5,769.81 km) |
| Herndon to Santa Cruz | 3,359.70 mi (5,406.91 km) |
| Herndon to Santa Iria da Azoia | 3,579.18 mi (5,760.13 km) |
