| River Ridge to Alenquer | 4,513.37 mi (7,263.57 km) |
| River Ridge to Alfena | 4,488.11 mi (7,222.92 km) |
| River Ridge to Alijo | 4,538.78 mi (7,304.47 km) |
| River Ridge to Aljustrel | 4,583.38 mi (7,376.24 km) |
| River Ridge to Almada | 4,514.77 mi (7,265.82 km) |
| River Ridge to Almargem | 4,505.16 mi (7,250.35 km) |
| River Ridge to Almeirim | 4,530.08 mi (7,290.47 km) |
| River Ridge to Amadora | 4,509.73 mi (7,257.72 km) |
| River Ridge to Amarante | 4,509.99 mi (7,258.13 km) |
| River Ridge to Amares | 4,489.08 mi (7,224.47 km) |
| River Ridge to Amora | 4,518.03 mi (7,271.06 km) |
| River Ridge to Anadia | 4,510.83 mi (7,259.47 km) |
| River Ridge to Angra do Heroismo | 3,575.85 mi (5,754.78 km) |
| River Ridge to Ansiao | 4,522.67 mi (7,278.54 km) |
| River Ridge to Anta | 4,488.37 mi (7,223.33 km) |
