| Difficult Run to Alenquer | 3,577.09 mi (5,756.77 km) |
| Difficult Run to Alfena | 3,543.80 mi (5,703.19 km) |
| Difficult Run to Alijo | 3,593.48 mi (5,783.14 km) |
| Difficult Run to Aljustrel | 3,650.51 mi (5,874.93 km) |
| Difficult Run to Almada | 3,580.10 mi (5,761.61 km) |
| Difficult Run to Almargem | 3,569.96 mi (5,745.29 km) |
| Difficult Run to Almeirim | 3,592.77 mi (5,782.01 km) |
| Difficult Run to Amadora | 3,574.94 mi (5,753.31 km) |
| Difficult Run to Amarante | 3,565.21 mi (5,737.64 km) |
| Difficult Run to Amares | 3,543.48 mi (5,702.67 km) |
| Difficult Run to Amora | 3,583.52 mi (5,767.11 km) |
| Difficult Run to Anadia | 3,568.99 mi (5,743.73 km) |
| Difficult Run to Angra do Heroismo | 2,665.03 mi (4,288.95 km) |
| Difficult Run to Ansiao | 3,582.59 mi (5,765.62 km) |
| Difficult Run to Anta | 3,544.85 mi (5,704.89 km) |
