| London Colney to Ilawa | 839.64 mi (1,351.27 km) |
| London Colney to Imielin | 854.39 mi (1,375.00 km) |
| London Colney to Inowroclaw | 786.21 mi (1,265.28 km) |
| London Colney to Janow Lubelski | 981.52 mi (1,579.60 km) |
| London Colney to Jarocin | 758.06 mi (1,219.98 km) |
| London Colney to Jaroslaw | 1,004.63 mi (1,616.80 km) |
| London Colney to Jasien | 801.54 mi (1,289.96 km) |
| London Colney to Jaslo | 958.11 mi (1,541.93 km) |
| London Colney to Jastrzebie-Zdroj | 830.63 mi (1,336.76 km) |
| London Colney to Jawor | 711.44 mi (1,144.95 km) |
| London Colney to Jaworzno | 855.42 mi (1,376.66 km) |
| London Colney to Jedrzejow | 892.45 mi (1,436.25 km) |
| London Colney to Jelcz-Laskowice | 760.08 mi (1,223.23 km) |
| London Colney to Jelenia Gora | 693.39 mi (1,115.90 km) |
| London Colney to Jozefoslaw | 906.88 mi (1,459.48 km) |
