| Missouri City to Popovo | 6,195.98 mi (9,971.46 km) |
| Missouri City to Provadia | 6,248.15 mi (10,055.42 km) |
| Missouri City to Radnevo | 6,233.46 mi (10,031.78 km) |
| Missouri City to Radomir | 6,107.46 mi (9,829.01 km) |
| Missouri City to Rakitovo | 6,176.96 mi (9,940.85 km) |
| Missouri City to Rakovski | 6,197.11 mi (9,973.28 km) |
| Missouri City to Razgrad | 6,197.93 mi (9,974.61 km) |
| Missouri City to Razlog | 6,157.42 mi (9,909.41 km) |
| Missouri City to Ruse | 6,163.66 mi (9,919.45 km) |
| Missouri City to Samokov | 6,140.52 mi (9,882.21 km) |
| Missouri City to Sandanski | 6,164.29 mi (9,920.47 km) |
| Missouri City to Sevlievo | 6,168.98 mi (9,928.01 km) |
| Missouri City to Shumen | 6,225.02 mi (10,018.20 km) |
| Missouri City to Silistra | 6,197.77 mi (9,974.35 km) |
| Missouri City to Sliven | 6,230.74 mi (10,027.41 km) |
