| Ashtabula to Popovo | 5,013.51 mi (8,068.47 km) |
| Ashtabula to Provadia | 5,066.04 mi (8,153.00 km) |
| Ashtabula to Radnevo | 5,050.51 mi (8,128.01 km) |
| Ashtabula to Radomir | 4,924.38 mi (7,925.02 km) |
| Ashtabula to Rakitovo | 4,993.86 mi (8,036.84 km) |
| Ashtabula to Rakovski | 5,014.04 mi (8,069.32 km) |
| Ashtabula to Razgrad | 5,015.67 mi (8,071.94 km) |
| Ashtabula to Razlog | 4,974.38 mi (8,005.49 km) |
| Ashtabula to Ruse | 4,981.35 mi (8,016.71 km) |
| Ashtabula to Samokov | 4,957.42 mi (7,978.20 km) |
| Ashtabula to Sandanski | 4,981.35 mi (8,016.70 km) |
| Ashtabula to Sevlievo | 4,986.09 mi (8,024.33 km) |
| Ashtabula to Shumen | 5,042.77 mi (8,115.55 km) |
| Ashtabula to Silistra | 5,016.25 mi (8,072.87 km) |
| Ashtabula to Sliven | 5,048.00 mi (8,123.98 km) |
