| Del City to Popovo | 5,942.40 mi (9,563.36 km) |
| Del City to Provadia | 5,991.62 mi (9,642.59 km) |
| Del City to Radnevo | 5,985.21 mi (9,632.26 km) |
| Del City to Radomir | 5,867.24 mi (9,442.40 km) |
| Del City to Rakitovo | 5,935.78 mi (9,552.71 km) |
| Del City to Rakovski | 5,951.89 mi (9,578.64 km) |
| Del City to Razgrad | 5,942.74 mi (9,563.91 km) |
| Del City to Razlog | 5,918.58 mi (9,525.03 km) |
| Del City to Ruse | 5,908.94 mi (9,509.51 km) |
| Del City to Samokov | 5,899.40 mi (9,494.16 km) |
| Del City to Sandanski | 5,927.43 mi (9,539.27 km) |
| Del City to Sevlievo | 5,920.14 mi (9,527.55 km) |
| Del City to Shumen | 5,969.60 mi (9,607.14 km) |
| Del City to Silistra | 5,937.96 mi (9,556.22 km) |
| Del City to Sliven | 5,979.64 mi (9,623.31 km) |
