| Apex to Popovo | 5,230.61 mi (8,417.85 km) |
| Apex to Provadia | 5,286.04 mi (8,507.06 km) |
| Apex to Radnevo | 5,260.99 mi (8,466.75 km) |
| Apex to Radomir | 5,126.70 mi (8,250.63 km) |
| Apex to Rakitovo | 5,196.63 mi (8,363.17 km) |
| Apex to Rakovski | 5,221.34 mi (8,402.93 km) |
| Apex to Razgrad | 5,234.64 mi (8,424.33 km) |
| Apex to Razlog | 5,174.60 mi (8,327.72 km) |
| Apex to Ruse | 5,200.11 mi (8,368.78 km) |
| Apex to Samokov | 5,160.47 mi (8,304.98 km) |
| Apex to Sandanski | 5,179.20 mi (8,335.12 km) |
| Apex to Sevlievo | 5,197.89 mi (8,365.20 km) |
| Apex to Shumen | 5,261.72 mi (8,467.91 km) |
| Apex to Silistra | 5,240.64 mi (8,433.99 km) |
| Apex to Sliven | 5,261.84 mi (8,468.11 km) |
