| Casselberry to Devnya | 5,736.49 mi (9,231.99 km) |
| Casselberry to Dimitrovgrad | 5,695.87 mi (9,166.62 km) |
| Casselberry to Dobrich | 5,734.40 mi (9,228.62 km) |
| Casselberry to Dospat | 5,647.65 mi (9,089.01 km) |
| Casselberry to Dupnitsa | 5,579.61 mi (8,979.51 km) |
| Casselberry to Elhovo | 5,733.38 mi (9,226.98 km) |
| Casselberry to Etropole | 5,598.03 mi (9,009.16 km) |
| Casselberry to Gabrovo | 5,654.44 mi (9,099.94 km) |
| Casselberry to Gorna Oryahovitsa | 5,660.41 mi (9,109.54 km) |
| Casselberry to Gotse Delchev | 5,631.47 mi (9,062.97 km) |
| Casselberry to Harmanli | 5,713.20 mi (9,194.51 km) |
| Casselberry to Haskovo | 5,698.71 mi (9,171.19 km) |
| Casselberry to Ihtiman | 5,604.13 mi (9,018.97 km) |
| Casselberry to Isperih | 5,686.83 mi (9,152.08 km) |
| Casselberry to Kardzhali | 5,700.38 mi (9,173.87 km) |
