| Butte to Devnya | 5,813.91 mi (9,356.59 km) |
| Butte to Dimitrovgrad | 5,839.99 mi (9,398.55 km) |
| Butte to Dobrich | 5,798.25 mi (9,331.38 km) |
| Butte to Dospat | 5,829.54 mi (9,381.73 km) |
| Butte to Dupnitsa | 5,766.30 mi (9,279.96 km) |
| Butte to Elhovo | 5,855.67 mi (9,423.79 km) |
| Butte to Etropole | 5,753.71 mi (9,259.70 km) |
| Butte to Gabrovo | 5,783.74 mi (9,308.03 km) |
| Butte to Gorna Oryahovitsa | 5,776.10 mi (9,295.74 km) |
| Butte to Gotse Delchev | 5,823.83 mi (9,372.54 km) |
| Butte to Harmanli | 5,854.28 mi (9,421.55 km) |
| Butte to Haskovo | 5,846.33 mi (9,408.75 km) |
| Butte to Ihtiman | 5,773.19 mi (9,291.04 km) |
| Butte to Isperih | 5,766.49 mi (9,280.26 km) |
| Butte to Kardzhali | 5,858.83 mi (9,428.88 km) |
