| Oildale to Popovo | 6,571.16 mi (10,575.26 km) |
| Oildale to Provadia | 6,609.12 mi (10,636.35 km) |
| Oildale to Radnevo | 6,628.15 mi (10,666.97 km) |
| Oildale to Radomir | 6,538.96 mi (10,523.44 km) |
| Oildale to Rakitovo | 6,601.75 mi (10,624.50 km) |
| Oildale to Rakovski | 6,605.32 mi (10,630.23 km) |
| Oildale to Razgrad | 6,566.55 mi (10,567.84 km) |
| Oildale to Razlog | 6,592.08 mi (10,608.92 km) |
| Oildale to Ruse | 6,535.73 mi (10,518.24 km) |
| Oildale to Samokov | 6,567.14 mi (10,568.79 km) |
| Oildale to Sandanski | 6,606.19 mi (10,631.64 km) |
| Oildale to Sevlievo | 6,564.25 mi (10,564.13 km) |
| Oildale to Shumen | 6,591.51 mi (10,608.01 km) |
| Oildale to Silistra | 6,547.69 mi (10,537.48 km) |
| Oildale to Sliven | 6,614.28 mi (10,644.65 km) |
