| Crystal Lake to Popovo | 5,268.96 mi (8,479.57 km) |
| Crystal Lake to Provadia | 5,318.89 mi (8,559.93 km) |
| Crystal Lake to Radnevo | 5,310.71 mi (8,546.76 km) |
| Crystal Lake to Radomir | 5,191.39 mi (8,354.74 km) |
| Crystal Lake to Rakitovo | 5,260.09 mi (8,465.30 km) |
| Crystal Lake to Rakovski | 5,276.84 mi (8,492.25 km) |
| Crystal Lake to Razgrad | 5,269.66 mi (8,480.70 km) |
| Crystal Lake to Razlog | 5,242.58 mi (8,437.11 km) |
| Crystal Lake to Ruse | 5,235.73 mi (8,426.09 km) |
| Crystal Lake to Samokov | 5,223.69 mi (8,406.72 km) |
| Crystal Lake to Sandanski | 5,251.19 mi (8,450.97 km) |
| Crystal Lake to Sevlievo | 5,245.72 mi (8,442.17 km) |
| Crystal Lake to Shumen | 5,296.59 mi (8,524.04 km) |
| Crystal Lake to Silistra | 5,266.02 mi (8,474.84 km) |
| Crystal Lake to Sliven | 5,305.70 mi (8,538.70 km) |
