| Wolf Trap to Popovo | 5,015.39 mi (8,071.49 km) |
| Wolf Trap to Provadia | 5,070.09 mi (8,159.53 km) |
| Wolf Trap to Radnevo | 5,047.63 mi (8,123.38 km) |
| Wolf Trap to Radomir | 4,915.51 mi (7,910.75 km) |
| Wolf Trap to Rakitovo | 4,985.39 mi (8,023.21 km) |
| Wolf Trap to Rakovski | 5,008.83 mi (8,060.94 km) |
| Wolf Trap to Razgrad | 5,018.92 mi (8,077.17 km) |
| Wolf Trap to Razlog | 4,964.07 mi (7,988.90 km) |
| Wolf Trap to Ruse | 4,984.42 mi (8,021.64 km) |
| Wolf Trap to Samokov | 4,949.11 mi (7,964.82 km) |
| Wolf Trap to Sandanski | 4,969.36 mi (7,997.42 km) |
| Wolf Trap to Sevlievo | 4,984.10 mi (8,021.13 km) |
| Wolf Trap to Shumen | 5,046.03 mi (8,120.80 km) |
| Wolf Trap to Silistra | 5,023.47 mi (8,084.50 km) |
| Wolf Trap to Sliven | 5,047.55 mi (8,123.24 km) |
