Are the mile markers also important to navigating around Maui? Where can I find their locations? We're doing some tourist maps for Maui.
Here is a link to the spot where i got mile markers for Hawaii (it includes Maui). It is on a website that is one of the most comprehensive state-gis-data sites I've seen. Lots of cool data. The homepage is here.
I personally do not know if mile-markers are as important for Maui. The folks at Haleakala National Park would probably know if people use them on the island.