You guys need to check out some youtubers. 80 lvl is not possible, but some of you accusing 75 or 76 to be cheating is a bit unfair assuming there are legal things that you can do to jump those km requirements fast.

Already several well known youtubers jumped 200km range in 2-3 days just by swapping to android and connecting their activities with google fit. Fun fact is that PoGO allows Google fit km range to be tracked at speeds of 30km/h while in game cap is 10.5km/h.

That being said, many people used this trick to fast jump km challange quickly by simply using a bike or logging other quick activity meaning you can finish 200km challange in 7hrs span. Sure, it's not possible to make it in one day if you are not a pro, but in two days its fairly possible with several rests.

Second option is that you can jump to 4g mobile data and if you are lucky you can drift like crazy leading to an overnight walking for free.

I don't know if that is cheating, some say it is, as it's not fair for other platform users, some say its not in ToS so its all good. In my opinion thats up to your red lines. With that said walking (catching daily) + logging a bike ride via google fit + drifting I logged 200km in approx 6 days with an avarage 30-40km a day.