| Shasta Lake to Popovo | 6,310.71 mi (10,156.11 km) |
| Shasta Lake to Provadia | 6,344.77 mi (10,210.92 km) |
| Shasta Lake to Radnevo | 6,371.27 mi (10,253.56 km) |
| Shasta Lake to Radomir | 6,292.39 mi (10,126.62 km) |
| Shasta Lake to Rakitovo | 6,352.47 mi (10,223.31 km) |
| Shasta Lake to Rakovski | 6,352.01 mi (10,222.58 km) |
| Shasta Lake to Razgrad | 6,304.66 mi (10,146.38 km) |
| Shasta Lake to Razlog | 6,345.34 mi (10,211.83 km) |
| Shasta Lake to Ruse | 6,275.16 mi (10,098.89 km) |
| Shasta Lake to Samokov | 6,318.90 mi (10,169.28 km) |
| Shasta Lake to Sandanski | 6,360.97 mi (10,236.99 km) |
| Shasta Lake to Sevlievo | 6,308.59 mi (10,152.70 km) |
| Shasta Lake to Shumen | 6,328.72 mi (10,185.09 km) |
| Shasta Lake to Silistra | 6,281.85 mi (10,109.66 km) |
| Shasta Lake to Sliven | 6,355.03 mi (10,227.44 km) |
