Friendly Run is a mode in which you can practice by challenging your friend's play data and score.
From your kingdom, select Friends and then touch Run next to the friend you want to challenge.
You don't need Rally Tickets to play a Friendly Run, but the number of Friendly Runs you can play in one day is determined by how many World Tour stages you have cleared. Your coins, Toads, and the number of enemies defeated will not increase from Friendly Run.