I've traced a GPX downloaded from https://www.hollandcyclingroutes.com/uploads/gpstracks/LF2gpx.zip, extended it back to Brussels using an old PDF map and saved it for posterity. The route has been discontinued following the LF network being cut from 24 routes to just 4, and the LF2 signs are reported as removed in 2021, but it looks basically still rideable and a touring route from Brussels to Amsterdam interests some people, so I hope saving this will help. I make it available here for commentary as things develop. Please only download it for your private study and do not reproduce it commercially.
Two changes have been forced by developments:
- Just south/west of Oudenbosch, the N640 has been built across the route with no crossing provided (yes, even the Netherlands sometimes forces cyclists to detour to help motorists!) so this route deviates east to the next bridge;
- Just north of Kinderdijk, the ferry west leaves from a slightly different place.