| Zachary to Popovo | 5,971.70 mi (9,610.53 km) |
| Zachary to Provadia | 6,025.10 mi (9,696.47 km) |
| Zachary to Radnevo | 6,006.69 mi (9,666.84 km) |
| Zachary to Radomir | 5,877.53 mi (9,458.97 km) |
| Zachary to Rakitovo | 5,947.26 mi (9,571.19 km) |
| Zachary to Rakovski | 5,969.10 mi (9,606.34 km) |
| Zachary to Razgrad | 5,974.40 mi (9,614.86 km) |
| Zachary to Razlog | 5,926.79 mi (9,538.24 km) |
| Zachary to Ruse | 5,939.99 mi (9,559.48 km) |
| Zachary to Samokov | 5,910.88 mi (9,512.64 km) |
| Zachary to Sandanski | 5,932.83 mi (9,547.97 km) |
| Zachary to Sevlievo | 5,942.63 mi (9,563.73 km) |
| Zachary to Shumen | 6,001.52 mi (9,658.51 km) |
| Zachary to Silistra | 5,976.41 mi (9,618.10 km) |
| Zachary to Sliven | 6,005.25 mi (9,664.52 km) |
