| Bonham to Popovo | 6,000.70 mi (9,657.19 km) |
| Bonham to Provadia | 6,051.15 mi (9,738.38 km) |
| Bonham to Radnevo | 6,041.41 mi (9,722.71 km) |
| Bonham to Radomir | 5,920.14 mi (9,527.54 km) |
| Bonham to Rakitovo | 5,989.12 mi (9,638.56 km) |
| Bonham to Rakovski | 6,006.85 mi (9,667.10 km) |
| Bonham to Razgrad | 6,001.69 mi (9,658.78 km) |
| Bonham to Razlog | 5,970.98 mi (9,609.36 km) |
| Bonham to Ruse | 5,967.66 mi (9,604.03 km) |
| Bonham to Samokov | 5,952.68 mi (9,579.92 km) |
| Bonham to Sandanski | 5,979.05 mi (9,622.36 km) |
| Bonham to Sevlievo | 5,976.52 mi (9,618.28 km) |
| Bonham to Shumen | 6,028.66 mi (9,702.19 km) |
| Bonham to Silistra | 5,998.76 mi (9,654.07 km) |
| Bonham to Sliven | 6,036.98 mi (9,715.58 km) |
