Hi, I have checked the official DJI Flysafe GEO zones and the TMB trail route and according to the information in the internet you can fly a drone (at least Mavic Air 2S, which I have) on most parts on the trail. I have made this picture. It is based on the GEO Flyzones on DJI website DJI FlySafe and Alltrails TMB route. Of course, I haven't made a perfect route because this map is not suitable for drawing the trail but you can check it yourself by comparing the fly zones and the official trail on other maps. I hope this helps future hikers