| Omaha to Popovo | 5,579.25 mi (8,978.93 km) |
| Omaha to Provadia | 5,626.68 mi (9,055.27 km) |
| Omaha to Radnevo | 5,624.93 mi (9,052.45 km) |
| Omaha to Radomir | 5,512.02 mi (8,870.73 km) |
| Omaha to Rakitovo | 5,579.75 mi (8,979.74 km) |
| Omaha to Rakovski | 5,593.46 mi (9,001.81 km) |
| Omaha to Razgrad | 5,578.68 mi (8,978.02 km) |
| Omaha to Razlog | 5,563.99 mi (8,954.38 km) |
| Omaha to Ruse | 5,545.25 mi (8,924.22 km) |
| Omaha to Samokov | 5,543.54 mi (8,921.46 km) |
| Omaha to Sandanski | 5,573.97 mi (8,970.44 km) |
| Omaha to Sevlievo | 5,559.75 mi (8,947.56 km) |
| Omaha to Shumen | 5,605.34 mi (9,020.92 km) |
| Omaha to Silistra | 5,571.36 mi (8,966.25 km) |
| Omaha to Sliven | 5,617.77 mi (9,040.93 km) |
