Most Footpath users have specific routes in mind and prefer zooming + panning to draw their route in multiple, shorter segments. Footpath has some editing tools that improve upon the hold & drag UI you'd normally find on the web.
However, and forgive the ignorant question, how different is Footpath to EasyRoute (which is free, & supports uploads to Wahoo, Strava [iirc], and others)?
One aspect of EasyRoute that is pretty awesome is its support for exporting turn instructions to Wahoo + Garmin GPS devices via FIT files (the developer works for Wahoo by day), while Footpath only supports exporting the route data to GPX files right now.
Hope that helps.
It was the FIT export that had me download it initially. Not sure it supports turn-by-turn though; haven't tried recently.