The wheel goes a distance equal to circumference of the wheel.
C = 2*pi*r
r = 0.500 m
pi = 3.14159
C = 2.3.14*0.500
C = 3.14 m
so in 1 click, the when turns 1 turn and the wheel makes the bike go 3.14 m
In 320 clicks she's going to go 320 * 3.14 = 1005.31 m
That's how far it is from her...