| Gahanna to Arcos de Valdevez | 3,759.14 mi (6,049.76 km) |
| Gahanna to Arcozelo | 3,771.98 mi (6,070.41 km) |
| Gahanna to Arganil | 3,824.72 mi (6,155.29 km) |
| Gahanna to Arouca | 3,794.17 mi (6,106.13 km) |
| Gahanna to Arruda dos Vinhos | 3,814.09 mi (6,138.19 km) |
| Gahanna to Aveiro | 3,784.00 mi (6,089.77 km) |
| Gahanna to Aver-o-Mar | 3,755.65 mi (6,044.14 km) |
| Gahanna to Aves | 3,776.60 mi (6,077.85 km) |
| Gahanna to Azambuja | 3,821.14 mi (6,149.53 km) |
| Gahanna to Baiao | 3,797.19 mi (6,110.99 km) |
| Gahanna to Barcelos | 3,759.51 mi (6,050.34 km) |
| Gahanna to Barreiro | 3,823.86 mi (6,153.91 km) |
| Gahanna to Batalha | 3,806.48 mi (6,125.95 km) |
| Gahanna to Beja | 3,900.87 mi (6,277.84 km) |
| Gahanna to Belas | 3,810.62 mi (6,132.61 km) |
