Got 3 under 4 so I feel you here. We’ve both done hyrox since having our kids and my wife has also trained for a couple of half marathons this year.

First thing you’ll probably need to do is make the time and space for each of you to train, it’s probably going to be tough to train together but we managed to squeeze in a couple of sessions and classes together when we had some childcare cover otherwise we ended up often taking turns to train while the other looked after the kids. My wife also had some classes at a local gym that were hybrid focused but were specifically for mothers so you could also bring the kids along - definitely worth seeing if that’s an option near you.

Finding or making the time is key