| Watsonville to Devnya | 6,574.49 mi (10,580.61 km) |
| Watsonville to Dimitrovgrad | 6,605.47 mi (10,630.48 km) |
| Watsonville to Dobrich | 6,557.86 mi (10,553.86 km) |
| Watsonville to Dospat | 6,597.70 mi (10,617.97 km) |
| Watsonville to Dupnitsa | 6,535.34 mi (10,517.61 km) |
| Watsonville to Elhovo | 6,619.36 mi (10,652.84 km) |
| Watsonville to Etropole | 6,520.86 mi (10,494.31 km) |
| Watsonville to Gabrovo | 6,548.74 mi (10,539.18 km) |
| Watsonville to Gorna Oryahovitsa | 6,540.17 mi (10,525.39 km) |
| Watsonville to Gotse Delchev | 6,592.70 mi (10,609.93 km) |
| Watsonville to Harmanli | 6,619.39 mi (10,652.88 km) |
| Watsonville to Haskovo | 6,612.00 mi (10,640.98 km) |
| Watsonville to Ihtiman | 6,541.04 mi (10,526.79 km) |
| Watsonville to Isperih | 6,527.82 mi (10,505.51 km) |
| Watsonville to Kardzhali | 6,625.14 mi (10,662.14 km) |
