MBS MapView - Distance and Radius

Hello,
I love the MBS Plugin! I'm using MapView.PlanRoute and have 2 questions.

1 - How can I calculate DISTANCE between 2 gps points?

2 - Using MapView am I able to determine if a gps point is within a Radius?

Thank you so much, keep up the great work!

Check out this function here: CLGeocoder.Distance

It calculates the distance between two coordinates.