| Muscle Shoals to Arcos de Valdevez | 4,169.60 mi (6,710.32 km) |
| Muscle Shoals to Arcozelo | 4,179.38 mi (6,726.07 km) |
| Muscle Shoals to Arganil | 4,229.83 mi (6,807.25 km) |
| Muscle Shoals to Arouca | 4,201.61 mi (6,761.84 km) |
| Muscle Shoals to Arruda dos Vinhos | 4,213.26 mi (6,780.58 km) |
| Muscle Shoals to Aveiro | 4,189.88 mi (6,742.96 km) |
| Muscle Shoals to Aver-o-Mar | 4,164.15 mi (6,701.56 km) |
| Muscle Shoals to Aves | 4,185.77 mi (6,736.34 km) |
| Muscle Shoals to Azambuja | 4,220.90 mi (6,792.88 km) |
| Muscle Shoals to Baiao | 4,205.71 mi (6,768.43 km) |
| Muscle Shoals to Barcelos | 4,168.58 mi (6,708.68 km) |
| Muscle Shoals to Barreiro | 4,221.80 mi (6,794.34 km) |
| Muscle Shoals to Batalha | 4,208.54 mi (6,772.99 km) |
| Muscle Shoals to Beja | 4,298.06 mi (6,917.06 km) |
| Muscle Shoals to Belas | 4,208.70 mi (6,773.25 km) |
