calendar events searchable?

[midirtrider]

Im looking for help or even bump in the right direction on a project I am working on..

I need my calendar to be searchable by distance..

this is my goal with it..

So lets say there is an event on 5-21-11 that is in tany given area code

I need to be able to search within X amount of miles of my area code.. .. and it will search the calendar for all the events within that distance..

So not only do I need a search system that works by distance..
but also a feild in the calendar that you imput the area code that the event is taking place in.

does that make sense?

any help would be AWSOME.