That looks normal and those roots look good to me for a Kalanchoe.

This does happen in a gritty mix. Extremely vigorous root growth that is almost annoying when repotting time comes around. I find that this is mostly a problem for members of Crassulaceae (including Kalanchoe).

Thanks for the reassurance Nil13 and mesembs!

Very typical for a terracotta pot with gritty. The porous pot stores some water which attracts the roots to it. In plastic you don't get this to the same extent.

I usually break up and remove the sides when repotting. Not sure what others do?

I do what ewwmayo does. Pretty much rip off the sides and loosen up the soil in the center.

That's what I get too, which is why I use less and less Turface in my gritty mix. It makes the mix WAY too compacted when I removed it from the pot. Increasingly, I am using about 20% Turface, 30% pumice, 25% manna pro grit and 25% perlite, and I find I have less compacting. But it's a nuisance to sift and wash all those ingredients. I always end up loosening way more of the mix than I think I should when I repot.

Yeah, I have the same thing happen. This is a jade I was repotting.

I have also left the roots and I think that was a mistake. When I needed to repot again I had 2 layers of roots shaped like a pot. I'm sorry I don't have a picture. The inner, or original mat of roots remained. Then I had a layer of gritty mix and another mat of roots near the pot. I hope you can imagine that - and really, I should have known better. But this did not hurt the plant, either. It just prolonged the inevitable removal of those matted roots.

Glad you asked this question!! I was wondering if it was something I was doing.