| Oak Forest to Popovo | 5,280.25 mi (8,497.75 km) |
| Oak Forest to Provadia | 5,330.66 mi (8,578.87 km) |
| Oak Forest to Radnevo | 5,321.18 mi (8,563.62 km) |
| Oak Forest to Radomir | 5,200.58 mi (8,369.53 km) |
| Oak Forest to Rakitovo | 5,269.46 mi (8,480.37 km) |
| Oak Forest to Rakovski | 5,286.83 mi (8,508.33 km) |
| Oak Forest to Razgrad | 5,281.22 mi (8,499.29 km) |
| Oak Forest to Razlog | 5,251.57 mi (8,451.58 km) |
| Oak Forest to Ruse | 5,247.20 mi (8,444.55 km) |
| Oak Forest to Samokov | 5,233.03 mi (8,421.75 km) |
| Oak Forest to Sandanski | 5,259.88 mi (8,464.96 km) |
| Oak Forest to Sevlievo | 5,256.27 mi (8,459.14 km) |
| Oak Forest to Shumen | 5,308.19 mi (8,542.70 km) |
| Oak Forest to Silistra | 5,278.30 mi (8,494.60 km) |
| Oak Forest to Sliven | 5,316.62 mi (8,556.27 km) |
