| Watford to Butzbach | 402.09 mi (647.09 km) |
| Watford to Buxtehude | 441.90 mi (711.17 km) |
| Watford to Cadolzburg | 516.75 mi (831.62 km) |
| Watford to Calbe | 519.98 mi (836.83 km) |
| Watford to Calw | 451.59 mi (726.76 km) |
| Watford to Castrop-Rauxel | 330.90 mi (532.53 km) |
| Watford to Celle | 448.94 mi (722.50 km) |
| Watford to Cham | 597.40 mi (961.41 km) |
| Watford to Chemnitz | 577.78 mi (929.84 km) |
| Watford to Clausthal-Zellerfeld | 458.94 mi (738.59 km) |
| Watford to Cloppenburg | 366.42 mi (589.69 km) |
| Watford to Coburg | 503.15 mi (809.74 km) |
| Watford to Coesfeld | 323.60 mi (520.79 km) |
| Watford to Cologne | 321.20 mi (516.92 km) |
| Watford to Coswig | 602.81 mi (970.12 km) |
