There are difficulty divided hiking trails in Israel and they are named rather than numbered.
If I remember the description correctly, this is how it goes:
Green - Easy, Blue - Balanced, Red - Hard, Black - Very hard (equipment may be required)
Those trails are rarely urban, they almost always go through natural places (desert, mountains and forests)
Luckily for me, I live near a forest so I go there from time to time if there’s no lockdown, mostly morning walks.
I also plan adding beach cleaning to my schedule, with the beach being 4.5km away it shouldn’t be much of a problem for me.
EDIT: I also use an app for betting on my activity from last week and it actually pumped up my activity. If I will beat my challenge, I will get my money back, if not, I will lose it.
In short, money is a great motivator, isn’t it?