| Healdsburg to Arcore | 5,903.82 mi (9,501.28 km) |
| Healdsburg to Ardea | 6,224.11 mi (10,016.74 km) |
| Healdsburg to Arenzano | 5,954.67 mi (9,583.11 km) |
| Healdsburg to Arese | 5,901.46 mi (9,497.49 km) |
| Healdsburg to Arezzo | 6,098.84 mi (9,815.13 km) |
| Healdsburg to Argelato | 6,020.36 mi (9,688.84 km) |
| Healdsburg to Argenta | 6,031.41 mi (9,706.62 km) |
| Healdsburg to Ariano Irpino | 6,321.71 mi (10,173.81 km) |
| Healdsburg to Ariccia | 6,221.63 mi (10,012.75 km) |
| Healdsburg to Arluno | 5,900.50 mi (9,495.94 km) |
| Healdsburg to Arona | 5,875.55 mi (9,455.78 km) |
| Healdsburg to Artena | 6,227.71 mi (10,022.53 km) |
| Healdsburg to Arzachena | 6,161.99 mi (9,916.77 km) |
| Healdsburg to Arzano | 6,312.96 mi (10,159.73 km) |
| Healdsburg to Arzignano | 5,966.13 mi (9,601.55 km) |
