| Covington to Popovo | 5,290.75 mi (8,514.65 km) |
| Covington to Provadia | 5,343.30 mi (8,599.22 km) |
| Covington to Radnevo | 5,327.66 mi (8,574.04 km) |
| Covington to Radomir | 5,201.26 mi (8,370.63 km) |
| Covington to Rakitovo | 5,270.77 mi (8,482.49 km) |
| Covington to Rakovski | 5,291.10 mi (8,515.21 km) |
| Covington to Razgrad | 5,292.93 mi (8,518.14 km) |
| Covington to Razlog | 5,251.19 mi (8,450.98 km) |
| Covington to Ruse | 5,258.61 mi (8,462.91 km) |
| Covington to Samokov | 5,234.34 mi (8,423.85 km) |
| Covington to Sandanski | 5,258.06 mi (8,462.03 km) |
| Covington to Sevlievo | 5,263.25 mi (8,470.38 km) |
| Covington to Shumen | 5,320.03 mi (8,561.76 km) |
| Covington to Silistra | 5,293.51 mi (8,519.08 km) |
| Covington to Sliven | 5,325.21 mi (8,570.10 km) |
