| Niles to Popovo | 5,260.97 mi (8,466.71 km) |
| Niles to Provadia | 5,311.18 mi (8,547.52 km) |
| Niles to Radnevo | 5,302.26 mi (8,533.16 km) |
| Niles to Radomir | 5,182.21 mi (8,339.97 km) |
| Niles to Rakitovo | 5,251.01 mi (8,450.69 km) |
| Niles to Rakovski | 5,268.11 mi (8,478.21 km) |
| Niles to Razgrad | 5,261.82 mi (8,468.09 km) |
| Niles to Razlog | 5,233.29 mi (8,422.16 km) |
| Niles to Ruse | 5,227.84 mi (8,413.40 km) |
| Niles to Samokov | 5,214.60 mi (8,392.08 km) |
| Niles to Sandanski | 5,241.73 mi (8,435.75 km) |
| Niles to Sevlievo | 5,237.31 mi (8,428.63 km) |
| Niles to Shumen | 5,288.78 mi (8,511.46 km) |
| Niles to Silistra | 5,258.60 mi (8,462.89 km) |
| Niles to Sliven | 5,297.50 mi (8,525.50 km) |
