| Springboro to Devnya | 5,309.97 mi (8,545.57 km) |
| Springboro to Dimitrovgrad | 5,290.13 mi (8,513.64 km) |
| Springboro to Dobrich | 5,303.39 mi (8,534.98 km) |
| Springboro to Dospat | 5,253.11 mi (8,454.07 km) |
| Springboro to Dupnitsa | 5,184.57 mi (8,343.77 km) |
| Springboro to Elhovo | 5,321.53 mi (8,564.17 km) |
| Springboro to Etropole | 5,193.12 mi (8,357.52 km) |
| Springboro to Gabrovo | 5,242.48 mi (8,436.95 km) |
| Springboro to Gorna Oryahovitsa | 5,244.12 mi (8,439.59 km) |
| Springboro to Gotse Delchev | 5,239.98 mi (8,432.93 km) |
| Springboro to Harmanli | 5,306.98 mi (8,540.77 km) |
| Springboro to Haskovo | 5,294.23 mi (8,520.24 km) |
| Springboro to Ihtiman | 5,203.90 mi (8,374.87 km) |
| Springboro to Isperih | 5,259.51 mi (8,464.37 km) |
| Springboro to Kardzhali | 5,299.58 mi (8,528.85 km) |
