| Oroville to Popovo | 6,369.46 mi (10,250.66 km) |
| Oroville to Provadia | 6,404.43 mi (10,306.93 km) |
| Oroville to Radnevo | 6,429.24 mi (10,346.86 km) |
| Oroville to Radomir | 6,347.96 mi (10,216.05 km) |
| Oroville to Rakitovo | 6,408.70 mi (10,313.80 km) |
| Oroville to Rakovski | 6,409.16 mi (10,314.54 km) |
| Oroville to Razgrad | 6,363.74 mi (10,241.44 km) |
| Oroville to Razlog | 6,400.98 mi (10,301.38 km) |
| Oroville to Ruse | 6,333.92 mi (10,193.45 km) |
| Oroville to Samokov | 6,374.87 mi (10,259.36 km) |
| Oroville to Sandanski | 6,416.28 mi (10,326.00 km) |
| Oroville to Sevlievo | 6,366.25 mi (10,245.48 km) |
| Oroville to Shumen | 6,388.01 mi (10,280.51 km) |
| Oroville to Silistra | 6,341.81 mi (10,206.16 km) |
| Oroville to Sliven | 6,413.53 mi (10,321.58 km) |
