Sonic's Cherry Limeade

I can't get Sonic in Alaska and I have reverted to making my own limeades.  This is the best cherry version I've tried so far.

1 can frozen limeade concentrate
1-2 liters of Sprite
Juice from a 10 oz. jar of marachino cherries
fresh limes cut into wedges

Mix the limeade, Sprite, and cherry juice together in large pitcher.  Squeeze a lime wedge and then put the wedge into individual glasses.  Pour limeade over lime wedges.