Any half iron this year?
Oh boy, you're in for a lot of "fun" finding the right shoes is kinda of a mix of goldilocks and cinderella.
A lot of shoes squish your toes together but you want them to be able to splay.
Running room, MEC in the west. Sportchek of you know what you're looking for.
The whole trick with this is to start slow. You don't need speed work. Just ride "lots" of miles at an easy pace that you could basically breathe through your nose and/or have an easy convo.
Especially if you have extra weight (like i have had for the past few years) that'll help your joints get used to running without putting too much intensity/load on them. Even after you get used to it, most of your running should be "easy" and then you sprinkle speedwork and "race pace" intervals on top but that's not for a little while
Eventually you'll get to a point that you can zone out in your easy runs and not be in pain at all (sometimes it might only be after you warm up).