| Willoughby to Kelkheim (Taunus) | 4,093.89 mi (6,588.49 km) |
| Willoughby to Kelsterbach | 4,099.63 mi (6,597.72 km) |
| Willoughby to Kemberg | 4,193.35 mi (6,748.54 km) |
| Willoughby to Kempen | 3,975.32 mi (6,397.66 km) |
| Willoughby to Kempten | 4,251.61 mi (6,842.30 km) |
| Willoughby to Kenzingen | 4,134.25 mi (6,653.43 km) |
| Willoughby to Kerpen | 4,001.92 mi (6,440.47 km) |
| Willoughby to Ketsch | 4,123.67 mi (6,636.41 km) |
| Willoughby to Kevelaer | 3,961.89 mi (6,376.05 km) |
| Willoughby to Kiel | 4,016.20 mi (6,463.45 km) |
| Willoughby to Kierspe | 4,026.65 mi (6,480.27 km) |
| Willoughby to Kirchhain | 4,088.61 mi (6,579.99 km) |
| Willoughby to Kirchheim bei Munchen | 4,291.71 mi (6,906.84 km) |
| Willoughby to Kirchheim unter Teck | 4,184.65 mi (6,734.55 km) |
| Willoughby to Kirchhundem | 4,047.40 mi (6,513.67 km) |
