I am making a Mac OS X app, called "Your Running Log". Using Xcode, I am building it in core data. I think I am going to enter it in my school's Regional Technology Fair, on Feb 7th, 2009. The biggest problem that I am having right now, is summing up your total miles. I can't really work on it right now, so I think I am going to have to work on it on my friend's Macbook.

well there appears to have been a change of plans...
I am now making an online running log web app entitled, "MaxRun". I am using PHP, html, and mysql.
There is a login page where you type in your username and password, and it takes you to the home page. You click the 'add run' link and you fill out the date, time, miles, description, and location. I am currently trying to display the run data from the database