| Clarksburg to Arcos de Valdevez | 3,519.69 mi (5,664.40 km) |
| Clarksburg to Arcozelo | 3,529.34 mi (5,679.92 km) |
| Clarksburg to Arganil | 3,579.79 mi (5,761.12 km) |
| Clarksburg to Arouca | 3,551.57 mi (5,715.69 km) |
| Clarksburg to Arruda dos Vinhos | 3,563.68 mi (5,735.19 km) |
| Clarksburg to Aveiro | 3,539.83 mi (5,696.80 km) |
| Clarksburg to Aver-o-Mar | 3,514.13 mi (5,655.45 km) |
| Clarksburg to Aves | 3,535.78 mi (5,690.28 km) |
| Clarksburg to Azambuja | 3,571.25 mi (5,747.37 km) |
| Clarksburg to Baiao | 3,555.69 mi (5,722.33 km) |
| Clarksburg to Barcelos | 3,518.59 mi (5,662.62 km) |
| Clarksburg to Barreiro | 3,572.39 mi (5,749.21 km) |
| Clarksburg to Batalha | 3,558.67 mi (5,727.12 km) |
| Clarksburg to Beja | 3,648.78 mi (5,872.14 km) |
| Clarksburg to Belas | 3,559.27 mi (5,728.09 km) |
