| Somerville to Arcos de Valdevez | 3,136.22 mi (5,047.26 km) |
| Somerville to Arcozelo | 3,147.19 mi (5,064.92 km) |
| Somerville to Arganil | 3,198.72 mi (5,147.85 km) |
| Somerville to Arouca | 3,169.42 mi (5,100.68 km) |
| Somerville to Arruda dos Vinhos | 3,185.51 mi (5,126.59 km) |
| Somerville to Aveiro | 3,158.39 mi (5,082.93 km) |
| Somerville to Aver-o-Mar | 3,131.50 mi (5,039.66 km) |
| Somerville to Aves | 3,152.86 mi (5,074.04 km) |
| Somerville to Azambuja | 3,192.78 mi (5,138.29 km) |
| Somerville to Baiao | 3,173.06 mi (5,106.55 km) |
| Somerville to Barcelos | 3,135.70 mi (5,046.43 km) |
| Somerville to Barreiro | 3,194.86 mi (5,141.62 km) |
| Somerville to Batalha | 3,179.05 mi (5,116.19 km) |
| Somerville to Beja | 3,271.65 mi (5,265.21 km) |
| Somerville to Belas | 3,181.66 mi (5,120.39 km) |
