| North Potomac to Arcore | 4,220.92 mi (6,792.91 km) |
| North Potomac to Ardea | 4,498.25 mi (7,239.23 km) |
| North Potomac to Arenzano | 4,233.17 mi (6,812.64 km) |
| North Potomac to Arese | 4,212.89 mi (6,780.00 km) |
| North Potomac to Arezzo | 4,403.82 mi (7,087.26 km) |
| North Potomac to Argelato | 4,342.87 mi (6,989.18 km) |
| North Potomac to Argenta | 4,362.30 mi (7,020.44 km) |
| North Potomac to Ariano Irpino | 4,626.94 mi (7,446.33 km) |
| North Potomac to Ariccia | 4,499.82 mi (7,241.77 km) |
| North Potomac to Arluno | 4,208.78 mi (6,773.37 km) |
| North Potomac to Arona | 4,184.59 mi (6,734.44 km) |
| North Potomac to Artena | 4,510.25 mi (7,258.55 km) |
| North Potomac to Arzachena | 4,375.48 mi (7,041.66 km) |
| North Potomac to Arzano | 4,599.51 mi (7,402.20 km) |
| North Potomac to Arzignano | 4,310.60 mi (6,937.24 km) |
