| Guadarrama to Popovo | 1,558.93 mi (2,508.85 km) |
| Guadarrama to Provadia | 1,619.98 mi (2,607.11 km) |
| Guadarrama to Radnevo | 1,549.91 mi (2,494.33 km) |
| Guadarrama to Radomir | 1,396.84 mi (2,247.99 km) |
| Guadarrama to Rakitovo | 1,457.92 mi (2,346.30 km) |
| Guadarrama to Rakovski | 1,500.78 mi (2,415.27 km) |
| Guadarrama to Razgrad | 1,572.34 mi (2,530.44 km) |
| Guadarrama to Razlog | 1,427.11 mi (2,296.71 km) |
| Guadarrama to Ruse | 1,543.25 mi (2,483.62 km) |
| Guadarrama to Samokov | 1,428.72 mi (2,299.31 km) |
| Guadarrama to Sandanski | 1,420.04 mi (2,285.34 km) |
| Guadarrama to Sevlievo | 1,504.09 mi (2,420.60 km) |
| Guadarrama to Shumen | 1,594.35 mi (2,565.86 km) |
| Guadarrama to Silistra | 1,607.32 mi (2,586.72 km) |
| Guadarrama to Sliven | 1,567.57 mi (2,522.76 km) |
