| Ionia to Popovo | 5,116.96 mi (8,234.95 km) |
| Ionia to Provadia | 5,167.67 mi (8,316.57 km) |
| Ionia to Radnevo | 5,157.38 mi (8,300.00 km) |
| Ionia to Radomir | 5,036.08 mi (8,104.80 km) |
| Ionia to Rakitovo | 5,105.04 mi (8,215.77 km) |
| Ionia to Rakovski | 5,122.75 mi (8,244.27 km) |
| Ionia to Razgrad | 5,118.08 mi (8,236.76 km) |
| Ionia to Razlog | 5,086.97 mi (8,186.69 km) |
| Ionia to Ruse | 5,084.02 mi (8,181.94 km) |
| Ionia to Samokov | 5,068.61 mi (8,157.13 km) |
| Ionia to Sandanski | 5,095.14 mi (8,199.83 km) |
| Ionia to Sevlievo | 5,092.51 mi (8,195.60 km) |
| Ionia to Shumen | 5,145.08 mi (8,280.21 km) |
| Ionia to Silistra | 5,115.67 mi (8,232.87 km) |
| Ionia to Sliven | 5,153.08 mi (8,293.08 km) |
