I used Strava Heatmap to add these paths. And usually I also try to verify by looking at aerial to see if it's visible there as well. Armchair mapping in this case.
At the moment there isn't much Strava Heatmap at way 1391388874, and neither in aerial. So feel free to edit/delete parts or all of it. If you recently surveyed the area, you know best :)
I would not have drawn the last part connecting to the road with current data, so something must have changed i guess.