| Abilene to Popovo | 6,186.94 mi (9,956.91 km) |
| Abilene to Provadia | 6,236.32 mi (10,036.39 km) |
| Abilene to Radnevo | 6,229.44 mi (10,025.32 km) |
| Abilene to Radomir | 6,110.86 mi (9,834.48 km) |
| Abilene to Rakitovo | 6,179.50 mi (9,944.94 km) |
| Abilene to Rakovski | 6,195.91 mi (9,971.36 km) |
| Abilene to Razgrad | 6,187.36 mi (9,957.60 km) |
| Abilene to Razlog | 6,162.11 mi (9,916.95 km) |
| Abilene to Ruse | 6,153.53 mi (9,903.15 km) |
| Abilene to Samokov | 6,143.10 mi (9,886.37 km) |
| Abilene to Sandanski | 6,170.79 mi (9,930.93 km) |
| Abilene to Sevlievo | 6,164.40 mi (9,920.65 km) |
| Abilene to Shumen | 6,214.24 mi (10,000.85 km) |
| Abilene to Silistra | 6,182.79 mi (9,950.24 km) |
| Abilene to Sliven | 6,224.05 mi (10,016.64 km) |
