(Review requested)

Welcome to OpenStreetMap and thanks for adding this.

It's fine as it is, but if you wanted to add a little more detail to help routing software, you could add surface and incline tags. Links for the tags which might be useful are below. This is entirely optional, so please do not feel as if you need to change anything.

https://wiki.openstreetmap.org/wiki/Key:surface
https://wiki.openstreetmap.org/wiki/Key:smoothness
https://wiki.openstreetmap.org/wiki/Key:tracktype
https://wiki.openstreetmap.org/wiki/Key:incline