| Isselburg to Devnya | 1,144.22 mi (1,841.44 km) |
| Isselburg to Dimitrovgrad | 1,121.92 mi (1,805.56 km) |
| Isselburg to Dobrich | 1,139.82 mi (1,834.36 km) |
| Isselburg to Dospat | 1,089.18 mi (1,752.86 km) |
| Isselburg to Dupnitsa | 1,021.22 mi (1,643.50 km) |
| Isselburg to Elhovo | 1,152.71 mi (1,855.11 km) |
| Isselburg to Etropole | 1,025.49 mi (1,650.36 km) |
| Isselburg to Gabrovo | 1,073.67 mi (1,727.91 km) |
| Isselburg to Gorna Oryahovitsa | 1,075.48 mi (1,730.81 km) |
| Isselburg to Gotse Delchev | 1,077.99 mi (1,734.85 km) |
| Isselburg to Harmanli | 1,138.64 mi (1,832.47 km) |
| Isselburg to Haskovo | 1,126.26 mi (1,812.54 km) |
| Isselburg to Ihtiman | 1,037.79 mi (1,670.16 km) |
| Isselburg to Isperih | 1,093.94 mi (1,760.53 km) |
| Isselburg to Kardzhali | 1,132.58 mi (1,822.72 km) |
