| Speyer to Devnya | 1,002.85 mi (1,613.93 km) |
| Speyer to Dimitrovgrad | 965.71 mi (1,554.16 km) |
| Speyer to Dobrich | 1,001.95 mi (1,612.48 km) |
| Speyer to Dospat | 925.42 mi (1,489.32 km) |
| Speyer to Dupnitsa | 856.85 mi (1,378.97 km) |
| Speyer to Elhovo | 1,000.76 mi (1,610.57 km) |
| Speyer to Etropole | 867.97 mi (1,396.87 km) |
| Speyer to Gabrovo | 921.55 mi (1,483.10 km) |
| Speyer to Gorna Oryahovitsa | 926.57 mi (1,491.16 km) |
| Speyer to Gotse Delchev | 912.20 mi (1,468.04 km) |
| Speyer to Harmanli | 982.86 mi (1,581.76 km) |
| Speyer to Haskovo | 969.25 mi (1,559.86 km) |
| Speyer to Ihtiman | 877.11 mi (1,411.58 km) |
| Speyer to Isperih | 953.54 mi (1,534.57 km) |
| Speyer to Kardzhali | 973.24 mi (1,566.28 km) |
