| Cities | Distance |
|---|---|
| Seia to Alenquer | 117.74 mi (189.48 km) |
| Seia to Alfena | 70.92 mi (114.14 km) |
| Seia to Alijo | 60.20 mi (96.88 km) |
| Seia to Aljustrel | 174.88 mi (281.44 km) |
| Seia to Almada | 143.16 mi (230.40 km) |
| Seia to Almargem | 137.13 mi (220.68 km) |
| Seia to Almeirim | 97.38 mi (156.72 km) |
| Seia to Amadora | 142.33 mi (229.06 km) |
| Seia to Amarante | 61.39 mi (98.80 km) |
| Seia to Amares | 88.86 mi (143.00 km) |
| Seia to Amora | 145.22 mi (233.70 km) |
| Seia to Anadia | 38.45 mi (61.88 km) |
| Seia to Angra do Heroismo | 1,044.71 mi (1,681.29 km) |
| Seia to Ansiao | 52.04 mi (83.75 km) |
| Seia to Anta | 63.01 mi (101.40 km) |