| Viterbo to Arcozelo | 1,070.96 mi (1,723.54 km) |
| Viterbo to Arganil | 1,054.50 mi (1,697.06 km) |
| Viterbo to Arouca | 1,052.61 mi (1,694.01 km) |
| Viterbo to Arruda dos Vinhos | 1,130.91 mi (1,820.02 km) |
| Viterbo to Aveiro | 1,077.89 mi (1,734.70 km) |
| Viterbo to Aver-o-Mar | 1,072.84 mi (1,726.56 km) |
| Viterbo to Aves | 1,048.49 mi (1,687.39 km) |
| Viterbo to Azambuja | 1,118.89 mi (1,800.68 km) |
| Viterbo to Baiao | 1,038.50 mi (1,671.31 km) |
| Viterbo to Barcelos | 1,063.66 mi (1,711.80 km) |
| Viterbo to Barreiro | 1,138.18 mi (1,831.72 km) |
| Viterbo to Batalha | 1,103.23 mi (1,775.48 km) |
| Viterbo to Beja | 1,094.13 mi (1,760.84 km) |
| Viterbo to Belas | 1,146.04 mi (1,844.38 km) |
| Viterbo to Benavente | 1,117.73 mi (1,798.82 km) |
