Amy wrote...

I use my iphone Health Data tracker for tracking my distances. i have attached 2 images of my half marathon that was run in 3 increments. The first day was Saturday, December 19 - 3.04 miles, the next day was Tuesday, December 22 - 2.26 miles and the final day was Sunday, January 31 - 8.05 miles, making a total of 13.35 miles run.