I just completed a pretty major upgrade of this app, including updating the mile markers to match the latest from the ATC and adding symbols for water sources, shelters, campsites, hostels, roads, etc. similar to the ones in WhiteBlaze Pages.

https://bentwells.shinyapps.io/atdata/

I'm still toying with the idea of creating a daily trip planner to accompany it - something where you can pick your start and end points for each day and it calculates distance, total elevation gain/loss, etc. Please let me know if you think something like that would be useful.