| Gretna to Arcos de Valdevez | 4,473.54 mi (7,199.46 km) |
| Gretna to Arcozelo | 4,480.18 mi (7,210.15 km) |
| Gretna to Arganil | 4,528.12 mi (7,287.30 km) |
| Gretna to Arouca | 4,502.37 mi (7,245.87 km) |
| Gretna to Arruda dos Vinhos | 4,505.66 mi (7,251.16 km) |
| Gretna to Aveiro | 4,489.08 mi (7,224.48 km) |
| Gretna to Aver-o-Mar | 4,466.11 mi (7,187.51 km) |
| Gretna to Aves | 4,488.34 mi (7,223.28 km) |
| Gretna to Azambuja | 4,513.86 mi (7,264.36 km) |
| Gretna to Baiao | 4,507.55 mi (7,254.20 km) |
| Gretna to Barcelos | 4,471.11 mi (7,195.55 km) |
| Gretna to Barreiro | 4,512.97 mi (7,262.92 km) |
| Gretna to Batalha | 4,503.84 mi (7,248.23 km) |
| Gretna to Beja | 4,588.19 mi (7,383.99 km) |
| Gretna to Belas | 4,500.05 mi (7,242.13 km) |
