Internet mapping service, known by that name from 1996; acquired by AOL in 2000. As a verb, by 1997.
Examples from the Web for mapquest
Contemporary Examples of mapquest
I would love to, but no,” she says, calling the former White House intern her “spiritual Mapquest.Ashley Dupré in Exile
April 22, 2009
Historical Examples of mapquest
He opened up a browser and hit MapQuest, then brought up a street-detailed map of the Market.Someone Comes to Town, Someone Leaves Town