| Erie to Popovo | 4,975.15 mi (8,006.73 km) |
| Erie to Provadia | 5,027.80 mi (8,091.45 km) |
| Erie to Radnevo | 5,011.93 mi (8,065.92 km) |
| Erie to Radomir | 4,885.51 mi (7,862.47 km) |
| Erie to Rakitovo | 4,955.02 mi (7,974.33 km) |
| Erie to Rakovski | 4,975.35 mi (8,007.05 km) |
| Erie to Razgrad | 4,977.38 mi (8,010.32 km) |
| Erie to Razlog | 4,935.45 mi (7,942.85 km) |
| Erie to Ruse | 4,943.05 mi (7,955.06 km) |
| Erie to Samokov | 4,918.58 mi (7,915.69 km) |
| Erie to Sandanski | 4,942.35 mi (7,953.95 km) |
| Erie to Sevlievo | 4,947.54 mi (7,962.29 km) |
| Erie to Shumen | 5,004.48 mi (8,053.93 km) |
| Erie to Silistra | 4,978.16 mi (8,011.58 km) |
| Erie to Sliven | 5,009.54 mi (8,062.07 km) |
