| Idar-Oberstein to Ardea | 613.42 mi (987.21 km) |
| Idar-Oberstein to Arenzano | 372.28 mi (599.13 km) |
| Idar-Oberstein to Arese | 298.87 mi (480.99 km) |
| Idar-Oberstein to Arezzo | 482.85 mi (777.07 km) |
| Idar-Oberstein to Argelato | 402.19 mi (647.27 km) |
| Idar-Oberstein to Argenta | 411.00 mi (661.45 km) |
| Idar-Oberstein to Ariano Irpino | 700.45 mi (1,127.27 km) |
| Idar-Oberstein to Ariccia | 609.39 mi (980.72 km) |
| Idar-Oberstein to Arluno | 300.59 mi (483.75 km) |
| Idar-Oberstein to Arona | 279.29 mi (449.48 km) |
| Idar-Oberstein to Artena | 613.51 mi (987.35 km) |
| Idar-Oberstein to Arzachena | 604.48 mi (972.82 km) |
| Idar-Oberstein to Arzano | 694.56 mi (1,117.78 km) |
| Idar-Oberstein to Arzignano | 344.94 mi (555.12 km) |
| Idar-Oberstein to Ascoli Piceno | 560.26 mi (901.65 km) |
