Snail Trail is another path tracking app for your iPhone. You can suspend tracking (by hitting the home button) and later on continue. It also features waypoints that can be added. Export is done by mail, you can hit the "email coordinates" button and a mail with a Google Earth KML file attatchment will be sent to the mail address provided. It's priced 0.99$
It's basically the same as Path Tracker, which I do like more for its looks.