| Porsgrunn to Alfena | 1,464.71 mi (2,357.22 km) |
| Porsgrunn to Alijo | 1,438.59 mi (2,315.18 km) |
| Porsgrunn to Aljustrel | 1,665.68 mi (2,680.65 km) |
| Porsgrunn to Almada | 1,638.77 mi (2,637.35 km) |
| Porsgrunn to Almargem | 1,630.79 mi (2,624.50 km) |
| Porsgrunn to Almeirim | 1,594.06 mi (2,565.39 km) |
| Porsgrunn to Amadora | 1,637.11 mi (2,634.67 km) |
| Porsgrunn to Amarante | 1,452.44 mi (2,337.48 km) |
| Porsgrunn to Amares | 1,436.86 mi (2,312.40 km) |
| Porsgrunn to Amora | 1,641.28 mi (2,641.39 km) |
| Porsgrunn to Anadia | 1,512.64 mi (2,434.36 km) |
| Porsgrunn to Angra do Heroismo | 2,146.90 mi (3,455.10 km) |
| Porsgrunn to Ansiao | 1,544.96 mi (2,486.38 km) |
| Porsgrunn to Anta | 1,481.30 mi (2,383.93 km) |
| Porsgrunn to Arcos de Valdevez | 1,424.62 mi (2,292.71 km) |
