Karen- It looks like your weight loss is doing fine! There are several tools to use to determine mileage of different routes that you want to run. One is mapmyrun.com. Active.com has this feature also- after you log in, go to "My profile", then "Manage my training" and the is a Map route feature available.
I use the Nike+ kit, and it is a pretty good tool to use to determine distance and pace. But first thing after you get it, try to calibrate it on a treadmill if you can for a .25 mile distance. Otherwise it assumes a pre-determined (faster) pace, which really throws off your "Best Time" calculations for quite a while.
Just completed the aptly name Frosty Freeze 5K Run. It was 34 with a wind chill of 25, after snowing early this morning. Most dangerous part of the race was driving here, because no one (in AL) remembers about ICE! I had my full cold weather (long) gear on, but took off the windbreaker and gloves about .3 mile into the race. I set up a nice steady pace - but I had people behind me somewhat, the whole time, and even passed 2 (LOL)!!
I ran the whole way & did the same splits as last week- 1mi=14:30, 2mi=30:03, so I was real happy. I finished 3 sec faster than last week - 46:33, or a 15:01 pace, though the course was a little more challenging. This was the same course as the first race that I did (walk/jog) in August, at > 62 mins. Such dramatic improvements won't be as easy in the future. I got 2nd (of 3) in my age group, with about a dozen behind me.
Funny thing is, they give gift certificates to the local running store as age group awards, and I'm almost breaking even with entry fees, because there are so few women in my age bracket, and I get a medal and certificate (HA HA!).
There is another race in 2 wks but I haven't decided to do it yet. In the meantime, I can open my new running shoes and start breaking them in.