| Troisdorf to Ardea | 685.48 mi (1,103.17 km) |
| Troisdorf to Arenzano | 448.65 mi (722.03 km) |
| Troisdorf to Arese | 374.32 mi (602.41 km) |
| Troisdorf to Arezzo | 554.11 mi (891.76 km) |
| Troisdorf to Argelato | 473.01 mi (761.24 km) |
| Troisdorf to Argenta | 480.22 mi (772.84 km) |
| Troisdorf to Ariano Irpino | 767.64 mi (1,235.40 km) |
| Troisdorf to Ariccia | 681.11 mi (1,096.14 km) |
| Troisdorf to Arluno | 376.30 mi (605.60 km) |
| Troisdorf to Arona | 355.45 mi (572.04 km) |
| Troisdorf to Artena | 684.70 mi (1,101.92 km) |
| Troisdorf to Arzachena | 680.85 mi (1,095.72 km) |
| Troisdorf to Arzano | 763.93 mi (1,229.42 km) |
| Troisdorf to Arzignano | 413.52 mi (665.49 km) |
| Troisdorf to Ascoli Piceno | 628.13 mi (1,010.88 km) |
