| Royston to Devnya | 1,410.54 mi (2,270.05 km) |
| Royston to Dimitrovgrad | 1,379.29 mi (2,219.75 km) |
| Royston to Dobrich | 1,407.72 mi (2,265.51 km) |
| Royston to Dospat | 1,340.22 mi (2,156.88 km) |
| Royston to Dupnitsa | 1,271.67 mi (2,046.55 km) |
| Royston to Elhovo | 1,413.09 mi (2,274.15 km) |
| Royston to Etropole | 1,281.75 mi (2,062.77 km) |
| Royston to Gabrovo | 1,333.82 mi (2,146.57 km) |
| Royston to Gorna Oryahovitsa | 1,337.63 mi (2,152.71 km) |
| Royston to Gotse Delchev | 1,327.06 mi (2,135.70 km) |
| Royston to Harmanli | 1,396.34 mi (2,247.19 km) |
| Royston to Haskovo | 1,383.03 mi (2,225.77 km) |
| Royston to Ihtiman | 1,291.53 mi (2,078.52 km) |
| Royston to Isperih | 1,360.62 mi (2,189.70 km) |
| Royston to Kardzhali | 1,387.52 mi (2,232.99 km) |
