| Zionsville to Popovo | 5,309.90 mi (8,545.46 km) |
| Zionsville to Provadia | 5,361.48 mi (8,628.46 km) |
| Zionsville to Radnevo | 5,348.70 mi (8,607.90 km) |
| Zionsville to Radomir | 5,224.93 mi (8,408.72 km) |
| Zionsville to Rakitovo | 5,294.18 mi (8,520.17 km) |
| Zionsville to Rakovski | 5,313.15 mi (8,550.69 km) |
| Zionsville to Razgrad | 5,311.51 mi (8,548.05 km) |
| Zionsville to Razlog | 5,275.38 mi (8,489.90 km) |
| Zionsville to Ruse | 5,277.31 mi (8,493.01 km) |
| Zionsville to Samokov | 5,257.73 mi (8,461.51 km) |
| Zionsville to Sandanski | 5,282.92 mi (8,502.03 km) |
| Zionsville to Sevlievo | 5,284.02 mi (8,503.81 km) |
| Zionsville to Shumen | 5,338.56 mi (8,591.58 km) |
| Zionsville to Silistra | 5,310.45 mi (8,546.35 km) |
| Zionsville to Sliven | 5,345.26 mi (8,602.37 km) |
