| Romanshorn to Ardahan | 1,692.73 mi (2,724.19 km) |
| Romanshorn to Ardesen | 1,610.30 mi (2,591.52 km) |
| Romanshorn to Arhavi | 1,620.63 mi (2,608.16 km) |
| Romanshorn to Aricak | 1,659.82 mi (2,671.23 km) |
| Romanshorn to Armutlu | 1,078.56 mi (1,735.78 km) |
| Romanshorn to Arnavutkoy | 1,050.10 mi (1,689.97 km) |
| Romanshorn to Arpacay | 1,730.23 mi (2,784.53 km) |
| Romanshorn to Arsin | 1,569.03 mi (2,525.11 km) |
| Romanshorn to Arsuz | 1,553.98 mi (2,500.88 km) |
| Romanshorn to Artvin | 1,649.35 mi (2,654.37 km) |
| Romanshorn to Asagicinik | 1,393.04 mi (2,241.88 km) |
| Romanshorn to Asarcik | 1,396.94 mi (2,248.15 km) |
| Romanshorn to Askale | 1,637.93 mi (2,636.00 km) |
| Romanshorn to Aslanapa | 1,175.09 mi (1,891.12 km) |
| Romanshorn to Atca | 1,162.85 mi (1,871.42 km) |
