I guess we are doing kilometers since somebody changed me back from my self designated miles. Dev has requested that all entries be in km to allow for easier comparisons and rankings. See his separate "100 Day Challenge Sign Up Procedure" thread at:
http://forum.slowtwitch.com/...post=1587937#1587937 (Edit: BTW, it wasn't me who changed your entry! Dev maybe?)
Personally, I don't keep track of my exact mileage. I typically run in the hills and I know my average (slow) pace, so in the km row I just entered Excel formulas to multiply my time in minutes by a constant factor. You can see what I mean by looking at the formulas in the km row for "Dan M (ST djm2150)". (I think you need
Edit and not just
View access to see formulas.) For track workout days when I know a more accurate distance I'll just replace the entry in that particular cell with an explicit number.
If anyone is interested I can post more details here.
Dan