Time your swipe just as you are about to hit the bike rack so you don't trip over it. If you jump too early though you will fall into it.
Easy Hard Stages
In the hard stages where you have to tap faster you can tap the screen with multiple fingers on one hand on each side. This will enable you to tap at half the speed that you normally would have to which makes it very easy to beat even the hard stages with three star scores.
Obstacles
You can extend your slide and swipe indefinitely by repeatedly swiping left, right or down. Doing this makes you stay in the left, right or slide position which makes it easy for you to avoid or slide under obstacles.
Timer
Don't worry about the timer as your only objective is to not get hit by anything while you are running after Archie.