This isn't really a path, and certainly not an official trail. It's a use trail [1] that should probably get (edit: now has) an informal=yes tag [2]. I think it still counts!

[1]: https://ironhiker.blogspot.com/2025/08/baden-powell-x3-and-r...

[2]: https://wiki.openstreetmap.org/wiki/Tag:informal%3Dyes

Nice find! I was dinking around GEarth looking at routes and never thought to look for stuff like this.