| Colorado Springs to Popovo | 5,983.25 mi (9,629.12 km) |
| Colorado Springs to Provadia | 6,027.82 mi (9,700.83 km) |
| Colorado Springs to Radnevo | 6,032.87 mi (9,708.97 km) |
| Colorado Springs to Radomir | 5,927.15 mi (9,538.83 km) |
| Colorado Springs to Rakitovo | 5,993.59 mi (9,645.76 km) |
| Colorado Springs to Rakovski | 6,004.07 mi (9,662.61 km) |
| Colorado Springs to Razgrad | 5,981.36 mi (9,626.06 km) |
| Colorado Springs to Razlog | 5,979.73 mi (9,623.45 km) |
| Colorado Springs to Ruse | 5,948.61 mi (9,573.37 km) |
| Colorado Springs to Samokov | 5,957.73 mi (9,588.04 km) |
| Colorado Springs to Sandanski | 5,991.10 mi (9,641.74 km) |
| Colorado Springs to Sevlievo | 5,967.79 mi (9,604.23 km) |
| Colorado Springs to Shumen | 6,007.59 mi (9,668.29 km) |
| Colorado Springs to Silistra | 5,970.19 mi (9,608.09 km) |
| Colorado Springs to Sliven | 6,023.48 mi (9,693.86 km) |
