| Olton to Popovo | 1,430.55 mi (2,302.24 km) |
| Olton to Provadia | 1,486.26 mi (2,391.91 km) |
| Olton to Radnevo | 1,462.09 mi (2,353.01 km) |
| Olton to Radomir | 1,332.62 mi (2,144.65 km) |
| Olton to Rakitovo | 1,402.23 mi (2,256.67 km) |
| Olton to Rakovski | 1,423.86 mi (2,291.47 km) |
| Olton to Razgrad | 1,434.74 mi (2,308.98 km) |
| Olton to Razlog | 1,382.47 mi (2,224.87 km) |
| Olton to Ruse | 1,400.21 mi (2,253.42 km) |
| Olton to Samokov | 1,365.81 mi (2,198.06 km) |
| Olton to Sandanski | 1,389.53 mi (2,236.23 km) |
| Olton to Sevlievo | 1,398.49 mi (2,250.65 km) |
| Olton to Shumen | 1,461.79 mi (2,352.52 km) |
| Olton to Silistra | 1,442.39 mi (2,321.30 km) |
| Olton to Sliven | 1,462.03 mi (2,352.90 km) |
