| Slagelse to Devnya | 1,109.21 mi (1,785.10 km) |
| Slagelse to Dimitrovgrad | 1,123.60 mi (1,808.25 km) |
| Slagelse to Dobrich | 1,097.30 mi (1,765.94 km) |
| Slagelse to Dospat | 1,112.73 mi (1,790.76 km) |
| Slagelse to Dupnitsa | 1,050.61 mi (1,690.80 km) |
| Slagelse to Elhovo | 1,142.01 mi (1,837.89 km) |
| Slagelse to Etropole | 1,036.45 mi (1,668.00 km) |
| Slagelse to Gabrovo | 1,068.06 mi (1,718.88 km) |
| Slagelse to Gorna Oryahovitsa | 1,062.04 mi (1,709.19 km) |
| Slagelse to Gotse Delchev | 1,107.86 mi (1,782.92 km) |
| Slagelse to Harmanli | 1,138.29 mi (1,831.90 km) |
| Slagelse to Haskovo | 1,129.74 mi (1,818.14 km) |
| Slagelse to Ihtiman | 1,056.14 mi (1,699.70 km) |
| Slagelse to Isperih | 1,059.82 mi (1,705.62 km) |
| Slagelse to Kardzhali | 1,141.77 mi (1,837.51 km) |
