Madrid center at the 0Km marker, in the same plaza were Apple store is you will find an old store specialized
in walking batons and poles and hats ... I got mine there during the Camino de Madrid.
Later modified to be split in two pieces to fit in my backpack.
Hi I bought mine from Decathlon Madrid Salamanca branch. They had a range at different prices. Bonus is the Salamanca branch is near the Sorolla Museum/ art gallery and is much less hectic than Atocha.
I went to three different places in Madrid because I’m very picky when it comes to poles. They have to be my size, not too heavy, they have to be the kind that folds out not the ones that telescope and they have to have rubber caps on the ends so I don’t make that awful “clinking” sound with every step. On the third store I found them! Go to Outdoor Sin Limite. They have the perfect poles! If not, you can certainly go to Decathlon but in my experience their inventory wasn’t too good. Best of luck to you! Robin