| Perth Amboy to Popovo | 4,823.09 mi (7,762.01 km) |
| Perth Amboy to Provadia | 4,877.97 mi (7,850.34 km) |
| Perth Amboy to Radnevo | 4,854.94 mi (7,813.28 km) |
| Perth Amboy to Radomir | 4,722.45 mi (7,600.05 km) |
| Perth Amboy to Rakitovo | 4,792.34 mi (7,712.52 km) |
| Perth Amboy to Rakovski | 4,815.98 mi (7,750.58 km) |
| Perth Amboy to Razgrad | 4,826.74 mi (7,767.88 km) |
| Perth Amboy to Razlog | 4,770.92 mi (7,678.05 km) |
| Perth Amboy to Ruse | 4,792.23 mi (7,712.34 km) |
| Perth Amboy to Samokov | 4,756.07 mi (7,654.16 km) |
| Perth Amboy to Sandanski | 4,776.12 mi (7,686.42 km) |
| Perth Amboy to Sevlievo | 4,791.49 mi (7,711.15 km) |
| Perth Amboy to Shumen | 4,853.84 mi (7,811.50 km) |
| Perth Amboy to Silistra | 4,831.67 mi (7,775.82 km) |
| Perth Amboy to Sliven | 4,855.04 mi (7,813.43 km) |
