| Copperas Cove to Popovo | 6,197.28 mi (9,973.56 km) |
| Copperas Cove to Provadia | 6,247.94 mi (10,055.09 km) |
| Copperas Cove to Radnevo | 6,237.60 mi (10,038.45 km) |
| Copperas Cove to Radomir | 6,115.64 mi (9,842.17 km) |
| Copperas Cove to Rakitovo | 6,184.71 mi (9,953.33 km) |
| Copperas Cove to Rakovski | 6,202.79 mi (9,982.43 km) |
| Copperas Cove to Razgrad | 6,198.39 mi (9,975.34 km) |
| Copperas Cove to Razlog | 6,166.35 mi (9,923.79 km) |
| Copperas Cove to Ruse | 6,164.33 mi (9,920.53 km) |
| Copperas Cove to Samokov | 6,148.27 mi (9,894.68 km) |
| Copperas Cove to Sandanski | 6,174.24 mi (9,936.48 km) |
| Copperas Cove to Sevlievo | 6,172.76 mi (9,934.09 km) |
| Copperas Cove to Shumen | 6,225.38 mi (10,018.78 km) |
| Copperas Cove to Silistra | 6,195.76 mi (9,971.11 km) |
| Copperas Cove to Sliven | 6,233.39 mi (10,031.67 km) |
