| Merrillville to Arcos de Valdevez | 3,916.40 mi (6,302.84 km) |
| Merrillville to Arcozelo | 3,932.50 mi (6,328.74 km) |
| Merrillville to Arganil | 3,987.46 mi (6,417.19 km) |
| Merrillville to Arouca | 3,954.58 mi (6,364.28 km) |
| Merrillville to Arruda dos Vinhos | 3,982.69 mi (6,409.52 km) |
| Merrillville to Aveiro | 3,946.09 mi (6,350.62 km) |
| Merrillville to Aver-o-Mar | 3,915.06 mi (6,300.69 km) |
| Merrillville to Aves | 3,935.21 mi (6,333.11 km) |
| Merrillville to Azambuja | 3,989.15 mi (6,419.92 km) |
| Merrillville to Baiao | 3,956.44 mi (6,367.27 km) |
| Merrillville to Barcelos | 3,918.28 mi (6,305.86 km) |
| Merrillville to Barreiro | 3,993.57 mi (6,427.02 km) |
| Merrillville to Batalha | 3,972.34 mi (6,392.86 km) |
| Merrillville to Beja | 4,071.01 mi (6,551.65 km) |
| Merrillville to Belas | 3,980.25 mi (6,405.59 km) |
