| Clay to Ilawa | 4,974.93 mi (8,006.37 km) |
| Clay to Imielin | 5,093.41 mi (8,197.05 km) |
| Clay to Inowroclaw | 4,959.20 mi (7,981.07 km) |
| Clay to Janow Lubelski | 5,186.67 mi (8,347.13 km) |
| Clay to Jarocin | 4,962.25 mi (7,985.97 km) |
| Clay to Jaroslaw | 5,224.21 mi (8,407.55 km) |
| Clay to Jasien | 4,912.90 mi (7,906.55 km) |
| Clay to Jaslo | 5,191.24 mi (8,354.50 km) |
| Clay to Jastrzebie-Zdroj | 5,076.88 mi (8,170.44 km) |
| Clay to Jawor | 4,947.75 mi (7,962.64 km) |
| Clay to Jaworzno | 5,092.66 mi (8,195.85 km) |
| Clay to Jedrzejow | 5,113.85 mi (8,229.95 km) |
| Clay to Jelcz-Laskowice | 4,990.28 mi (8,031.08 km) |
| Clay to Jelenia Gora | 4,935.65 mi (7,943.16 km) |
| Clay to Jozefoslaw | 5,083.54 mi (8,181.17 km) |
