Asics Running Clothes

I'm going to Budapest for the half-marathon in September. Where can I find stores selling running shoes, clothes and things? Nike, Asics, Adidas, Mizuno etc.? Will stay in the region of West End.

You should be able to find some in the West End Shopping Mall, otherwise there is a sports store called Marathon but it is located outside of downtown Budapest Budaors.It is a pretty big sports store and have decent shoes running.
I usually put my own training shoes with me since states.They are about twice as expensive in Hungary.