| Federal Heights to Popovo | 5,933.11 mi (9,548.42 km) |
| Federal Heights to Provadia | 5,977.15 mi (9,619.29 km) |
| Federal Heights to Radnevo | 5,983.41 mi (9,629.38 km) |
| Federal Heights to Radomir | 5,879.12 mi (9,461.53 km) |
| Federal Heights to Rakitovo | 5,945.28 mi (9,568.00 km) |
| Federal Heights to Rakovski | 5,955.12 mi (9,583.85 km) |
| Federal Heights to Razgrad | 5,930.98 mi (9,544.99 km) |
| Federal Heights to Razlog | 5,931.80 mi (9,546.30 km) |
| Federal Heights to Ruse | 5,898.37 mi (9,492.51 km) |
| Federal Heights to Samokov | 5,909.50 mi (9,510.42 km) |
| Federal Heights to Sandanski | 5,943.43 mi (9,565.03 km) |
| Federal Heights to Sevlievo | 5,918.38 mi (9,524.72 km) |
| Federal Heights to Shumen | 5,957.13 mi (9,587.07 km) |
| Federal Heights to Silistra | 5,919.15 mi (9,525.95 km) |
| Federal Heights to Sliven | 5,973.62 mi (9,613.62 km) |
