| Katy to Popovo | 6,194.68 mi (9,969.38 km) |
| Katy to Provadia | 6,246.65 mi (10,053.02 km) |
| Katy to Radnevo | 6,232.55 mi (10,030.32 km) |
| Katy to Radomir | 6,107.08 mi (9,828.39 km) |
| Katy to Rakitovo | 6,176.52 mi (9,940.15 km) |
| Katy to Rakovski | 6,196.40 mi (9,972.14 km) |
| Katy to Razgrad | 6,196.52 mi (9,972.34 km) |
| Katy to Razlog | 6,157.14 mi (9,908.96 km) |
| Katy to Ruse | 6,162.27 mi (9,917.22 km) |
| Katy to Samokov | 6,140.08 mi (9,881.50 km) |
| Katy to Sandanski | 6,164.15 mi (9,920.25 km) |
| Katy to Sevlievo | 6,168.01 mi (9,926.46 km) |
| Katy to Shumen | 6,223.60 mi (10,015.91 km) |
| Katy to Silistra | 6,196.03 mi (9,971.55 km) |
| Katy to Sliven | 6,229.63 mi (10,025.62 km) |
