50k is daunting. I did recently some good Saturday hikes in the mountains - 30km, with +1000m elevation gain and the step count was still below 50k. No way to achieve that on a working day - when I have to sit down for 7-8 hrs.

I did some estimation - when I returned from my evening walk that day with ~20k step, I had 3 more hours before going to bed. Assuming I used that time for moving, I would arrive at ~40k total. Still 10k short of @bucipuci. Amazing!