| Chillicothe to Popovo | 5,218.33 mi (8,398.09 km) |
| Chillicothe to Provadia | 5,271.23 mi (8,483.23 km) |
| Chillicothe to Radnevo | 5,254.52 mi (8,456.33 km) |
| Chillicothe to Radomir | 5,127.21 mi (8,251.45 km) |
| Chillicothe to Rakitovo | 5,196.80 mi (8,363.44 km) |
| Chillicothe to Rakovski | 5,217.61 mi (8,396.93 km) |
| Chillicothe to Razgrad | 5,220.71 mi (8,401.93 km) |
| Chillicothe to Razlog | 5,176.95 mi (8,331.49 km) |
| Chillicothe to Ruse | 5,186.35 mi (8,346.63 km) |
| Chillicothe to Samokov | 5,160.37 mi (8,304.82 km) |
| Chillicothe to Sandanski | 5,183.58 mi (8,342.17 km) |
| Chillicothe to Sevlievo | 5,190.23 mi (8,352.86 km) |
| Chillicothe to Shumen | 5,247.82 mi (8,445.56 km) |
| Chillicothe to Silistra | 5,221.92 mi (8,403.87 km) |
| Chillicothe to Sliven | 5,252.44 mi (8,452.98 km) |
