A Challenge!

Hello- I am back... and happy to say that I have lost my first 11 lbs! I can not tell you how excited I am to see that damn scale go the other way for once. Yes, I have much further to go but it is a good start.
I received a challenge from my little sister. On the Sat after Thanksgiving she wants me to jog a 5k with her! At first I thought, she must be texting someone else but then I realized she really meant me! Ha! ME??!! JOG??!! 5 miles? Is she crazy? Then after contemplating it I realized if I really tried I could walk it. Even better? I looked it up and it's only 3.1 miles! I walk that all the time. But wouldn't it be cool if I could work up and really jog it? So here is the deal: I WILL JOG 3.1 miles the Sat after Thanksgiving. I WILL do it...I think!!
I started training and with the help of my mini Jillian Michaels ( my 8 year old who definately has a future in training or torture) I will work my way up to it by then. It's good to have a goal. It'll be even better if I can accomplish it. Any suggestions on how to build up to it? Let me know.