| Chattanooga to Arcos de Valdevez | 4,043.29 mi (6,507.04 km) |
| Chattanooga to Arcozelo | 4,052.23 mi (6,521.44 km) |
| Chattanooga to Arganil | 4,102.05 mi (6,601.62 km) |
| Chattanooga to Arouca | 4,074.46 mi (6,557.21 km) |
| Chattanooga to Arruda dos Vinhos | 4,084.11 mi (6,572.73 km) |
| Chattanooga to Aveiro | 4,062.32 mi (6,537.68 km) |
| Chattanooga to Aver-o-Mar | 4,037.30 mi (6,497.41 km) |
| Chattanooga to Aves | 4,059.09 mi (6,532.47 km) |
| Chattanooga to Azambuja | 4,091.87 mi (6,585.23 km) |
| Chattanooga to Baiao | 4,078.84 mi (6,564.26 km) |
| Chattanooga to Barcelos | 4,041.88 mi (6,504.78 km) |
| Chattanooga to Barreiro | 4,092.39 mi (6,586.06 km) |
| Chattanooga to Batalha | 4,080.04 mi (6,566.20 km) |
| Chattanooga to Beja | 4,168.45 mi (6,708.47 km) |
| Chattanooga to Belas | 4,079.32 mi (6,565.03 km) |
