| Chattanooga to Popovo | 5,516.30 mi (8,877.63 km) |
| Chattanooga to Provadia | 5,570.12 mi (8,964.24 km) |
| Chattanooga to Radnevo | 5,550.47 mi (8,932.62 km) |
| Chattanooga to Radomir | 5,420.47 mi (8,723.40 km) |
| Chattanooga to Rakitovo | 5,490.25 mi (8,835.70 km) |
| Chattanooga to Rakovski | 5,512.53 mi (8,871.56 km) |
| Chattanooga to Razgrad | 5,519.26 mi (8,882.38 km) |
| Chattanooga to Razlog | 5,469.55 mi (8,802.39 km) |
| Chattanooga to Ruse | 5,484.81 mi (8,826.95 km) |
| Chattanooga to Samokov | 5,453.89 mi (8,777.19 km) |
| Chattanooga to Sandanski | 5,475.40 mi (8,811.81 km) |
| Chattanooga to Sevlievo | 5,486.55 mi (8,829.75 km) |
| Chattanooga to Shumen | 5,546.38 mi (8,926.03 km) |
| Chattanooga to Silistra | 5,522.07 mi (8,886.92 km) |
| Chattanooga to Sliven | 5,549.43 mi (8,930.95 km) |
