| Willoughby to Kluczbork | 4,425.13 mi (7,121.56 km) |
| Willoughby to Knurow | 4,472.42 mi (7,197.67 km) |
| Willoughby to Kobylka | 4,474.76 mi (7,201.43 km) |
| Willoughby to Kokoszki | 4,303.16 mi (6,925.27 km) |
| Willoughby to Kolbuszowa | 4,580.64 mi (7,371.83 km) |
| Willoughby to Kolno | 4,455.36 mi (7,170.21 km) |
| Willoughby to Kolo | 4,391.76 mi (7,067.85 km) |
| Willoughby to Kolobrzeg | 4,211.00 mi (6,776.95 km) |
| Willoughby to Koluszki | 4,450.26 mi (7,162.00 km) |
| Willoughby to Komorniki | 4,321.45 mi (6,954.71 km) |
| Willoughby to Konin | 4,378.33 mi (7,046.24 km) |
| Willoughby to Konskie | 4,494.05 mi (7,232.47 km) |
| Willoughby to Konstancin-Jeziorna | 4,482.14 mi (7,213.31 km) |
| Willoughby to Konstantynow Lodzki | 4,434.00 mi (7,135.84 km) |
| Willoughby to Koronowo | 4,324.11 mi (6,958.98 km) |
