| Colton to Devnya | 6,656.74 mi (10,712.99 km) |
| Colton to Dimitrovgrad | 6,677.84 mi (10,746.95 km) |
| Colton to Dobrich | 6,641.89 mi (10,689.09 km) |
| Colton to Dospat | 6,663.90 mi (10,724.52 km) |
| Colton to Dupnitsa | 6,599.47 mi (10,620.83 km) |
| Colton to Elhovo | 6,695.49 mi (10,775.36 km) |
| Colton to Etropole | 6,589.62 mi (10,604.96 km) |
| Colton to Gabrovo | 6,622.26 mi (10,657.49 km) |
| Colton to Gorna Oryahovitsa | 6,615.66 mi (10,646.87 km) |
| Colton to Gotse Delchev | 6,657.14 mi (10,713.63 km) |
| Colton to Harmanli | 6,692.54 mi (10,770.61 km) |
| Colton to Haskovo | 6,683.95 mi (10,756.78 km) |
| Colton to Ihtiman | 6,608.10 mi (10,634.71 km) |
| Colton to Isperih | 6,608.72 mi (10,635.70 km) |
| Colton to Kardzhali | 6,695.65 mi (10,775.61 km) |
