| Americus to Popovo | 5,625.77 mi (9,053.80 km) |
| Americus to Provadia | 5,680.93 mi (9,142.57 km) |
| Americus to Radnevo | 5,656.77 mi (9,103.70 km) |
| Americus to Radomir | 5,523.02 mi (8,888.44 km) |
| Americus to Rakitovo | 5,592.94 mi (9,000.97 km) |
| Americus to Rakovski | 5,617.35 mi (9,040.25 km) |
| Americus to Razgrad | 5,629.61 mi (9,059.98 km) |
| Americus to Razlog | 5,571.06 mi (8,965.75 km) |
| Americus to Ruse | 5,595.09 mi (9,004.43 km) |
| Americus to Samokov | 5,556.75 mi (8,942.73 km) |
| Americus to Sandanski | 5,575.78 mi (8,973.36 km) |
| Americus to Sevlievo | 5,593.53 mi (9,001.92 km) |
| Americus to Shumen | 5,656.70 mi (9,103.58 km) |
| Americus to Silistra | 5,635.00 mi (9,068.65 km) |
| Americus to Sliven | 5,657.32 mi (9,104.58 km) |
