1. A method comprising: receiving, at a mobile device, a route for traveling from a first location to a second location; receiving instructions for navigating the route, each instruction having an associated importance value; determining a first instruction to present to a user associated with the mobile device; determining whether an importance value associated with the first instruction exceeds a predetermined threshold value; based on determining that the importance value associated with the first instruction exceeds the predetermined threshold value, determining a first volume level for presenting the first instruction; and causing the first instruction to be presented to the user as audio at the first volume level.