| Norridge to Popovo | 5,264.67 mi (8,472.66 km) |
| Norridge to Provadia | 5,314.90 mi (8,553.50 km) |
| Norridge to Radnevo | 5,305.91 mi (8,539.04 km) |
| Norridge to Radomir | 5,185.80 mi (8,345.74 km) |
| Norridge to Rakitovo | 5,254.61 mi (8,456.48 km) |
| Norridge to Rakovski | 5,271.74 mi (8,484.05 km) |
| Norridge to Razgrad | 5,265.53 mi (8,474.05 km) |
| Norridge to Razlog | 5,236.87 mi (8,427.92 km) |
| Norridge to Ruse | 5,231.55 mi (8,419.36 km) |
| Norridge to Samokov | 5,218.19 mi (8,397.87 km) |
| Norridge to Sandanski | 5,245.30 mi (8,441.49 km) |
| Norridge to Sevlievo | 5,240.96 mi (8,434.52 km) |
| Norridge to Shumen | 5,292.49 mi (8,517.43 km) |
| Norridge to Silistra | 5,262.34 mi (8,468.92 km) |
| Norridge to Sliven | 5,301.17 mi (8,531.41 km) |
