According to a BJP statement, more than one lakh party workers riding motorbikes are expected to attend a rally to be addressed by Mr Shah.
Prime Minister Narendra Modi will address a rally on January 28 on the conclusion of the yatra to be led by BS Yeddyurappa.
Party workers from the Karnataka's 28,000 polling booths are expected to take part in Mr Shah's rally.
The Congress is in power in the state and the BJP is making all-out efforts to oust it in the Assembly election scheduled to be held early next year.
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