| Merriam to Arcos de Valdevez | 4,336.73 mi (6,979.29 km) |
| Merriam to Arcozelo | 4,353.65 mi (7,006.53 km) |
| Merriam to Arganil | 4,409.10 mi (7,095.76 km) |
| Merriam to Arouca | 4,375.69 mi (7,042.00 km) |
| Merriam to Arruda dos Vinhos | 4,405.47 mi (7,089.91 km) |
| Merriam to Aveiro | 4,367.61 mi (7,028.98 km) |
| Merriam to Aver-o-Mar | 4,335.96 mi (6,978.05 km) |
| Merriam to Aves | 4,355.89 mi (7,010.13 km) |
| Merriam to Azambuja | 4,411.83 mi (7,100.15 km) |
| Merriam to Baiao | 4,377.26 mi (7,044.53 km) |
| Merriam to Barcelos | 4,339.01 mi (6,982.96 km) |
| Merriam to Barreiro | 4,416.52 mi (7,107.70 km) |
| Merriam to Batalha | 4,394.63 mi (7,072.47 km) |
| Merriam to Beja | 4,494.00 mi (7,232.40 km) |
| Merriam to Belas | 4,403.19 mi (7,086.25 km) |
