| Horizon City to Popovo | 6,443.99 mi (10,370.60 km) |
| Horizon City to Provadia | 6,490.63 mi (10,445.66 km) |
| Horizon City to Radnevo | 6,490.68 mi (10,445.74 km) |
| Horizon City to Radomir | 6,379.10 mi (10,266.18 km) |
| Horizon City to Rakitovo | 6,446.66 mi (10,374.89 km) |
| Horizon City to Rakovski | 6,459.78 mi (10,396.00 km) |
| Horizon City to Razgrad | 6,443.05 mi (10,369.09 km) |
| Horizon City to Razlog | 6,431.18 mi (10,349.99 km) |
| Horizon City to Ruse | 6,409.80 mi (10,315.57 km) |
| Horizon City to Samokov | 6,410.49 mi (10,316.69 km) |
| Horizon City to Sandanski | 6,441.35 mi (10,366.36 km) |
| Horizon City to Sevlievo | 6,425.50 mi (10,340.84 km) |
| Horizon City to Shumen | 6,469.60 mi (10,411.82 km) |
| Horizon City to Silistra | 6,434.57 mi (10,355.44 km) |
| Horizon City to Sliven | 6,482.98 mi (10,433.35 km) |
