This map from Beskrovni's Atlas of Russian
military history shows the routes of the Muscovite armies from Moscow to Kazan.
One section was diverted temporarily south by the incursion of the Crimean
Tatars around Tula and Kashira. We see that the lead or advance polk,
the great or main polk and the right arm polk traveled by the
southern route across country through Ryazan, while the left arm polk
and the Tsar's personal druzhina went via Vladimir and Murom. They
reached the Volga at the fortress built on an island at Sviyazhsk where they
met supplies and artillery brought down the river by barge.