| Porsgrunn to Ardahan | 1,885.81 mi (3,034.92 km) |
| Porsgrunn to Ardesen | 1,827.44 mi (2,940.99 km) |
| Porsgrunn to Arhavi | 1,829.42 mi (2,944.16 km) |
| Porsgrunn to Aricak | 1,950.20 mi (3,138.54 km) |
| Porsgrunn to Armutlu | 1,529.70 mi (2,461.82 km) |
| Porsgrunn to Arnavutkoy | 1,486.56 mi (2,392.39 km) |
| Porsgrunn to Arpacay | 1,920.22 mi (3,090.30 km) |
| Porsgrunn to Arsin | 1,808.43 mi (2,910.39 km) |
| Porsgrunn to Arsuz | 1,958.06 mi (3,151.19 km) |
| Porsgrunn to Artvin | 1,853.93 mi (2,983.60 km) |
| Porsgrunn to Asagicinik | 1,683.44 mi (2,709.23 km) |
| Porsgrunn to Asarcik | 1,694.87 mi (2,727.63 km) |
| Porsgrunn to Askale | 1,889.56 mi (3,040.95 km) |
| Porsgrunn to Aslanapa | 1,634.80 mi (2,630.96 km) |
| Porsgrunn to Atca | 1,681.22 mi (2,705.66 km) |
