| West Covina to Devnya | 6,670.67 mi (10,735.41 km) |
| West Covina to Dimitrovgrad | 6,692.75 mi (10,770.95 km) |
| West Covina to Dobrich | 6,655.64 mi (10,711.22 km) |
| West Covina to Dospat | 6,679.40 mi (10,749.46 km) |
| West Covina to Dupnitsa | 6,615.15 mi (10,646.06 km) |
| West Covina to Elhovo | 6,710.04 mi (10,798.77 km) |
| West Covina to Etropole | 6,604.85 mi (10,629.48 km) |
| West Covina to Gabrovo | 6,637.04 mi (10,681.28 km) |
| West Covina to Gorna Oryahovitsa | 6,630.25 mi (10,670.35 km) |
| West Covina to Gotse Delchev | 6,672.80 mi (10,738.84 km) |
| West Covina to Harmanli | 6,707.38 mi (10,794.49 km) |
| West Covina to Haskovo | 6,698.90 mi (10,780.84 km) |
| West Covina to Ihtiman | 6,623.50 mi (10,659.49 km) |
| West Covina to Isperih | 6,622.77 mi (10,658.32 km) |
| West Covina to Kardzhali | 6,710.75 mi (10,799.91 km) |
