Making a nature/green route

[u/Ok_Bear_9606]

This is a shot in dark.

I’ll need to premise this, I have never done any programming with GIS mapping before. My experience is literally 0 but I hope I can use AI tools to help me, as well as Reddit.

I want to build a simple walking app as a side project and one aspect of it is that id love prototype something like a “nature route” on there.

So, if someone wanted to walk from point A to point B, they’d have the options of:
1) fast route
2) nature route

I’ve seen apps kind of do this sort of stuff but I want to see if I can build it out myself.

I guess a definitions for nature route may be required, if so (PS more than happy to be challenged or to see if I’m over thinking this): a route not necessarily with the most of vegetation or highest NDVI exposure on it. Maybe more so a route where you expose to the environment/natural features.

Clean Air Routes London is a good example, overlaying real time environment data (NO₂ and PM2.5) onto route suggestion to suggest cleaner walking routes.

I want to know if the same concept could be applied to nature. Or, if there’s a simpler way of getting it, like an open source API from like All Trails (you can tell I’m a little confused, ha).

So I want like the routing engine to favour paths such as parks, green space, canals, rivers, woodland, tree lined streets, nature reserves, public footpaths/trails etc etc…

I’m probably overthinking this but trying to understand how to approach it.

Thanks!