| Sankt Gallen to Devnya | 928.01 mi (1,493.49 km) |
| Sankt Gallen to Dimitrovgrad | 876.58 mi (1,410.72 km) |
| Sankt Gallen to Dobrich | 930.49 mi (1,497.49 km) |
| Sankt Gallen to Dospat | 828.82 mi (1,333.86 km) |
| Sankt Gallen to Dupnitsa | 760.49 mi (1,223.89 km) |
| Sankt Gallen to Elhovo | 915.52 mi (1,473.39 km) |
| Sankt Gallen to Etropole | 778.89 mi (1,253.50 km) |
| Sankt Gallen to Gabrovo | 837.26 mi (1,347.44 km) |
| Sankt Gallen to Gorna Oryahovitsa | 845.46 mi (1,360.64 km) |
| Sankt Gallen to Gotse Delchev | 813.54 mi (1,309.27 km) |
| Sankt Gallen to Harmanli | 893.95 mi (1,438.67 km) |
| Sankt Gallen to Haskovo | 879.24 mi (1,415.01 km) |
| Sankt Gallen to Ihtiman | 784.50 mi (1,262.53 km) |
| Sankt Gallen to Isperih | 880.43 mi (1,416.91 km) |
| Sankt Gallen to Kardzhali | 880.76 mi (1,417.45 km) |
