| Buffalo Grove to Popovo | 5,259.24 mi (8,463.93 km) |
| Buffalo Grove to Provadia | 5,309.33 mi (8,544.55 km) |
| Buffalo Grove to Radnevo | 5,300.72 mi (8,530.69 km) |
| Buffalo Grove to Radomir | 5,180.98 mi (8,337.99 km) |
| Buffalo Grove to Rakitovo | 5,249.74 mi (8,448.65 km) |
| Buffalo Grove to Rakovski | 5,266.69 mi (8,475.92 km) |
| Buffalo Grove to Razgrad | 5,260.03 mi (8,465.20 km) |
| Buffalo Grove to Razlog | 5,232.11 mi (8,420.26 km) |
| Buffalo Grove to Ruse | 5,226.07 mi (8,410.55 km) |
| Buffalo Grove to Samokov | 5,213.33 mi (8,390.05 km) |
| Buffalo Grove to Sandanski | 5,240.62 mi (8,433.97 km) |
| Buffalo Grove to Sevlievo | 5,235.75 mi (8,426.13 km) |
| Buffalo Grove to Shumen | 5,286.98 mi (8,508.56 km) |
| Buffalo Grove to Silistra | 5,256.63 mi (8,459.73 km) |
| Buffalo Grove to Sliven | 5,295.86 mi (8,522.86 km) |
