| North Little Rock to Popovo | 5,794.55 mi (9,325.42 km) |
| North Little Rock to Provadia | 5,846.08 mi (9,408.36 km) |
| North Little Rock to Radnevo | 5,833.32 mi (9,387.83 km) |
| North Little Rock to Radomir | 5,709.31 mi (9,188.24 km) |
| North Little Rock to Rakitovo | 5,778.60 mi (9,299.75 km) |
| North Little Rock to Rakovski | 5,797.71 mi (9,330.51 km) |
| North Little Rock to Razgrad | 5,796.13 mi (9,327.98 km) |
| North Little Rock to Razlog | 5,759.68 mi (9,269.30 km) |
| North Little Rock to Ruse | 5,761.94 mi (9,272.95 km) |
| North Little Rock to Samokov | 5,742.15 mi (9,241.09 km) |
| North Little Rock to Sandanski | 5,767.10 mi (9,281.25 km) |
| North Little Rock to Sevlievo | 5,768.66 mi (9,283.76 km) |
| North Little Rock to Shumen | 5,823.19 mi (9,371.51 km) |
| North Little Rock to Silistra | 5,794.96 mi (9,326.09 km) |
| North Little Rock to Sliven | 5,829.91 mi (9,382.34 km) |
