This achievement isn't difficult and if you're doing the adventure mode you'll likely and up getting this before finishing it. However if you don't or just want it out of the way all you want to do is go onto local play, choose exhibition race, then normal team race, press 'X' to bring up race options then increase number of laps to 5 and finally choose a map (preferably long ish map, I used market street) and try to use as many different ways to increase your ultimate meter.
Ways to increase team ultimate meter include transferring boxes, slingshotting, skimboosting, collecting rings etc.
You can also make this easier by using the bonus box which reduces amount needed to get the meter full if you're struggling without it.
Hope this helps :p