That's a solid amount of running/walking! Have you thought about doing some non-ambulatory cardio like rowing or swimming while transitioning, so that you can let your feet and lower legs rest?
I actually do that too. Besides what I mentioned there I lift weights 4-5 days a week plus I do this cardio/interval thing too where I row 1 min, do dips and then chins, in a circle, for an hour and I'm completely worn out afterwards cardio wise.
7 km is really far when brand new to this kind of running. In miles for those of you that don't know, that is about 4 and 1/3 miles at a time. Generally we recommend a mile tops, or 1.60934 km. I was able to do a mile and a half, but that is pretty abnormal. I do hope you listen to us and not try to do too much because you are in such good shape in all your other muscles. Muscles will adapt pretty fast, but bone takes some time.
Wolf's law. bones take a few months to adapt to new demands. better to keep the runs short. really short. otherwise fractured metatarsals will force you to rest. that's why everyone recommends bf first. your skin and bones match up pretty well as far as ability. feeling sore? stop.
either way when it's not fun or your getting fatigued. pack it in.
good luck.
Thank you Nick and Mike.
I really appreciate your advise. This is why I ask for your opinion. Because I really don't know how much is too much.
I clearly see now that what I had in mind is way too much. What I might need to make more clear is that I did plan to run very little of in the "runs/walks" in the beginning and walk the most of it, but I think, from what you say, that that will also be too much.
What about 2 lets call then walk/runs a week and then a lot more row+dips+chins cardio, and only walks if it feels good?