| Willoughby to Karis | 4,241.10 mi (6,825.39 km) |
| Willoughby to Karkkila | 4,238.44 mi (6,821.10 km) |
| Willoughby to Kauhajoki | 4,109.73 mi (6,613.97 km) |
| Willoughby to Kauhava | 4,108.41 mi (6,611.85 km) |
| Willoughby to Kauniainen | 4,265.46 mi (6,864.59 km) |
| Willoughby to Kemi | 4,047.41 mi (6,513.68 km) |
| Willoughby to Kemijarvi | 4,076.62 mi (6,560.68 km) |
| Willoughby to Kempele | 4,101.39 mi (6,600.55 km) |
| Willoughby to Kerava | 4,268.32 mi (6,869.19 km) |
| Willoughby to Keuruu | 4,183.97 mi (6,733.45 km) |
| Willoughby to Kiiminki | 4,099.35 mi (6,597.27 km) |
| Willoughby to Kirkkonummi | 4,260.57 mi (6,856.73 km) |
| Willoughby to Kitee | 4,331.06 mi (6,970.17 km) |
| Willoughby to Kiuruvesi | 4,178.21 mi (6,724.18 km) |
| Willoughby to Kivisto | 4,264.30 mi (6,862.73 km) |
