| River Grove to Arcos de Valdevez | 3,924.69 mi (6,316.17 km) |
| River Grove to Arcozelo | 3,941.43 mi (6,343.12 km) |
| River Grove to Arganil | 3,996.82 mi (6,432.26 km) |
| River Grove to Arouca | 3,963.48 mi (6,378.61 km) |
| River Grove to Arruda dos Vinhos | 3,993.25 mi (6,426.52 km) |
| River Grove to Aveiro | 3,955.34 mi (6,365.50 km) |
| River Grove to Aver-o-Mar | 3,923.78 mi (6,314.72 km) |
| River Grove to Aves | 3,943.76 mi (6,346.87 km) |
| River Grove to Azambuja | 3,999.59 mi (6,436.72 km) |
| River Grove to Baiao | 3,965.11 mi (6,381.22 km) |
| River Grove to Barcelos | 3,926.87 mi (6,319.69 km) |
| River Grove to Barreiro | 4,004.35 mi (6,444.38 km) |
| River Grove to Batalha | 3,982.34 mi (6,408.96 km) |
| River Grove to Beja | 4,081.85 mi (6,569.10 km) |
| River Grove to Belas | 3,991.02 mi (6,422.93 km) |
