| Glenn Heights to Popovo | 6,080.93 mi (9,786.32 km) |
| Glenn Heights to Provadia | 6,131.50 mi (9,867.70 km) |
| Glenn Heights to Radnevo | 6,121.43 mi (9,851.48 km) |
| Glenn Heights to Radomir | 5,999.79 mi (9,655.72 km) |
| Glenn Heights to Rakitovo | 6,068.81 mi (9,766.81 km) |
| Glenn Heights to Rakovski | 6,086.73 mi (9,795.65 km) |
| Glenn Heights to Razgrad | 6,081.99 mi (9,788.01 km) |
| Glenn Heights to Razlog | 6,050.56 mi (9,737.44 km) |
| Glenn Heights to Ruse | 6,047.95 mi (9,733.23 km) |
| Glenn Heights to Samokov | 6,032.37 mi (9,708.17 km) |
| Glenn Heights to Sandanski | 6,058.54 mi (9,750.28 km) |
| Glenn Heights to Sevlievo | 6,056.56 mi (9,747.10 km) |
| Glenn Heights to Shumen | 6,108.97 mi (9,831.44 km) |
| Glenn Heights to Silistra | 6,079.24 mi (9,783.58 km) |
| Glenn Heights to Sliven | 6,117.12 mi (9,844.55 km) |
