| Stanford to Popovo | 6,514.34 mi (10,483.82 km) |
| Stanford to Provadia | 6,549.61 mi (10,540.59 km) |
| Stanford to Radnevo | 6,573.83 mi (10,579.55 km) |
| Stanford to Radomir | 6,491.60 mi (10,447.22 km) |
| Stanford to Rakitovo | 6,552.61 mi (10,545.40 km) |
| Stanford to Rakovski | 6,553.43 mi (10,546.73 km) |
| Stanford to Razgrad | 6,508.73 mi (10,474.79 km) |
| Stanford to Razlog | 6,544.64 mi (10,532.59 km) |
| Stanford to Ruse | 6,478.80 mi (10,426.62 km) |
| Stanford to Samokov | 6,518.67 mi (10,490.79 km) |
| Stanford to Sandanski | 6,559.79 mi (10,556.97 km) |
| Stanford to Sevlievo | 6,510.72 mi (10,478.00 km) |
| Stanford to Shumen | 6,533.08 mi (10,513.97 km) |
| Stanford to Silistra | 6,487.10 mi (10,439.98 km) |
| Stanford to Sliven | 6,558.32 mi (10,554.59 km) |
