If you'd rather not risk your prior destination history getting snooped on in maps, you can easily clear it out.
Whenever you search for a place in Apple's Maps app for iPhone or iPad, your search queries are saved. The next time you tap on the search field, you'll see all the locations and places you've searched for in reverse chronological order. In other words, most recent on top. What if you don't like your prior searches to show up? That's the issue we're going to tackle today!
Full story from the iMore Blog...