| Oslo to Popovo | 1,315.95 mi (2,117.82 km) |
| Oslo to Provadia | 1,351.78 mi (2,175.48 km) |
| Oslo to Radnevo | 1,376.46 mi (2,215.20 km) |
| Oslo to Radomir | 1,305.98 mi (2,101.77 km) |
| Oslo to Rakitovo | 1,362.29 mi (2,192.40 km) |
| Oslo to Rakovski | 1,358.61 mi (2,186.47 km) |
| Oslo to Razgrad | 1,310.33 mi (2,108.77 km) |
| Oslo to Razlog | 1,358.16 mi (2,185.75 km) |
| Oslo to Ruse | 1,280.41 mi (2,060.62 km) |
| Oslo to Samokov | 1,330.11 mi (2,140.60 km) |
| Oslo to Sandanski | 1,375.69 mi (2,213.95 km) |
| Oslo to Sevlievo | 1,314.18 mi (2,114.97 km) |
| Oslo to Shumen | 1,334.80 mi (2,148.15 km) |
| Oslo to Silistra | 1,289.98 mi (2,076.03 km) |
| Oslo to Sliven | 1,360.11 mi (2,188.89 km) |
