| Marshalltown to Arcos de Valdevez | 4,146.29 mi (6,672.81 km) |
| Marshalltown to Arcozelo | 4,165.15 mi (6,703.17 km) |
| Marshalltown to Arganil | 4,221.86 mi (6,794.43 km) |
| Marshalltown to Arouca | 4,187.07 mi (6,738.45 km) |
| Marshalltown to Arruda dos Vinhos | 4,222.07 mi (6,794.77 km) |
| Marshalltown to Aveiro | 4,180.05 mi (6,727.15 km) |
| Marshalltown to Aver-o-Mar | 4,146.82 mi (6,673.66 km) |
| Marshalltown to Aves | 4,166.22 mi (6,704.88 km) |
| Marshalltown to Azambuja | 4,228.03 mi (6,804.35 km) |
| Marshalltown to Baiao | 4,187.93 mi (6,739.82 km) |
| Marshalltown to Barcelos | 4,149.48 mi (6,677.94 km) |
| Marshalltown to Barreiro | 4,233.85 mi (6,813.72 km) |
| Marshalltown to Batalha | 4,209.43 mi (6,774.43 km) |
| Marshalltown to Beja | 4,311.46 mi (6,938.62 km) |
| Marshalltown to Belas | 4,220.50 mi (6,792.23 km) |
