| Adel to Popovo | 1,449.82 mi (2,333.26 km) |
| Adel to Provadia | 1,503.68 mi (2,419.93 km) |
| Adel to Radnevo | 1,485.80 mi (2,391.16 km) |
| Adel to Radomir | 1,362.21 mi (2,192.27 km) |
| Adel to Rakitovo | 1,431.18 mi (2,303.26 km) |
| Adel to Rakovski | 1,449.73 mi (2,333.12 km) |
| Adel to Razgrad | 1,452.74 mi (2,337.96 km) |
| Adel to Razlog | 1,413.21 mi (2,274.33 km) |
| Adel to Ruse | 1,418.28 mi (2,282.51 km) |
| Adel to Samokov | 1,394.74 mi (2,244.62 km) |
| Adel to Sandanski | 1,421.78 mi (2,288.13 km) |
| Adel to Sevlievo | 1,421.37 mi (2,287.48 km) |
| Adel to Shumen | 1,479.86 mi (2,381.60 km) |
| Adel to Silistra | 1,456.67 mi (2,344.29 km) |
| Adel to Sliven | 1,483.52 mi (2,387.49 km) |
