| Kirkwood to Popovo | 5,529.86 mi (8,899.44 km) |
| Kirkwood to Provadia | 5,580.58 mi (8,981.08 km) |
| Kirkwood to Radnevo | 5,570.18 mi (8,964.34 km) |
| Kirkwood to Radomir | 5,448.54 mi (8,768.57 km) |
| Kirkwood to Rakitovo | 5,517.55 mi (8,879.64 km) |
| Kirkwood to Rakovski | 5,535.45 mi (8,908.45 km) |
| Kirkwood to Razgrad | 5,530.99 mi (8,901.27 km) |
| Kirkwood to Razlog | 5,499.34 mi (8,850.34 km) |
| Kirkwood to Ruse | 5,496.92 mi (8,846.45 km) |
| Kirkwood to Samokov | 5,481.11 mi (8,821.00 km) |
| Kirkwood to Sandanski | 5,507.38 mi (8,863.27 km) |
| Kirkwood to Sevlievo | 5,505.33 mi (8,859.97 km) |
| Kirkwood to Shumen | 5,557.99 mi (8,944.72 km) |
| Kirkwood to Silistra | 5,528.54 mi (8,897.33 km) |
| Kirkwood to Sliven | 5,565.94 mi (8,957.52 km) |
