| Austin to Popovo | 6,236.65 mi (10,036.91 km) |
| Austin to Provadia | 6,287.66 mi (10,119.02 km) |
| Austin to Radnevo | 6,276.30 mi (10,100.73 km) |
| Austin to Radomir | 6,153.34 mi (9,902.85 km) |
| Austin to Rakitovo | 6,222.53 mi (10,014.19 km) |
| Austin to Rakovski | 6,241.12 mi (10,044.11 km) |
| Austin to Razgrad | 6,237.95 mi (10,039.01 km) |
| Austin to Razlog | 6,203.88 mi (9,984.18 km) |
| Austin to Ruse | 6,203.84 mi (9,984.11 km) |
| Austin to Samokov | 6,186.08 mi (9,955.54 km) |
| Austin to Sandanski | 6,211.52 mi (9,996.48 km) |
| Austin to Sevlievo | 6,211.53 mi (9,996.49 km) |
| Austin to Shumen | 6,264.97 mi (10,082.49 km) |
| Austin to Silistra | 6,235.89 mi (10,035.70 km) |
| Austin to Sliven | 6,272.44 mi (10,094.52 km) |
