| Holbrook to Devnya | 4,821.66 mi (7,759.71 km) |
| Holbrook to Dimitrovgrad | 4,790.79 mi (7,710.03 km) |
| Holbrook to Dobrich | 4,817.53 mi (7,753.06 km) |
| Holbrook to Dospat | 4,748.03 mi (7,641.21 km) |
| Holbrook to Dupnitsa | 4,679.48 mi (7,530.90 km) |
| Holbrook to Elhovo | 4,825.44 mi (7,765.79 km) |
| Holbrook to Etropole | 4,693.00 mi (7,552.66 km) |
| Holbrook to Gabrovo | 4,746.17 mi (7,638.22 km) |
| Holbrook to Gorna Oryahovitsa | 4,750.08 mi (7,644.52 km) |
| Holbrook to Gotse Delchev | 4,733.36 mi (7,617.61 km) |
| Holbrook to Harmanli | 4,807.94 mi (7,737.64 km) |
| Holbrook to Haskovo | 4,794.26 mi (7,715.61 km) |
| Holbrook to Ihtiman | 4,701.46 mi (7,566.27 km) |
| Holbrook to Isperih | 4,771.47 mi (7,678.94 km) |
| Holbrook to Kardzhali | 4,797.77 mi (7,721.27 km) |
