| Willoughby to Butzbach | 4,091.86 mi (6,585.21 km) |
| Willoughby to Buxtehude | 4,028.42 mi (6,483.11 km) |
| Willoughby to Cadolzburg | 4,210.90 mi (6,776.79 km) |
| Willoughby to Calbe | 4,157.69 mi (6,691.16 km) |
| Willoughby to Calw | 4,154.08 mi (6,685.35 km) |
| Willoughby to Castrop-Rauxel | 4,003.48 mi (6,442.97 km) |
| Willoughby to Celle | 4,070.74 mi (6,551.22 km) |
| Willoughby to Cham | 4,287.59 mi (6,900.20 km) |
| Willoughby to Chemnitz | 4,238.14 mi (6,820.62 km) |
| Willoughby to Clausthal-Zellerfeld | 4,108.03 mi (6,611.24 km) |
| Willoughby to Cloppenburg | 3,988.66 mi (6,419.13 km) |
| Willoughby to Coburg | 4,185.51 mi (6,735.93 km) |
| Willoughby to Coesfeld | 3,984.83 mi (6,412.96 km) |
| Willoughby to Cologne | 4,009.67 mi (6,452.94 km) |
| Willoughby to Coswig | 4,251.74 mi (6,842.51 km) |
