to skileysc, you really shouldn't be worried about stopping or running "intervals"... Galloway ( a prolific marathoner and running author) states emphatically that you should takes rests from running during long runs by walking. He states that it leaves you with an energy boost to complete the last 5 - 6 miles when walk breaks are no longer needed. I have a difficult time using his formula but I take breaks when my body tells me it's necessary and I have completed 9 marathons and heaven knows how many halfs and other races. I too had a weight problem and still do at 185 -190 at age 61. When I started trying to run seriously at age 53 - 54 I weighted 275 - 280. But just like you, thru diet (wish I could have the discipline to keep on one now) and running dropped the weight in about 18 months.
Can you believe that at a weight of over 200 lbs, I used to teach a 1 credit class on Jogging at the college where I taught accounting classes. One thing I should always remind runners is that they need to hydrate and take gels. New runners should also be reminded to get themselves outfitted with technical wear. Nothing is so difficult than running in a soaked cotton T-Shirt. They don't breathe and extract a tremendous amount of energy as well as sapping confidence about running in general.
At the same running store where I suggested you get fitted for running shoes, ask the advise of the owner/manager, etc as to what kind of running wear and other necessities you'll need to make running enjoyable and healthy. I can assure you that the money spent there will be well worth it. (By the way, I don't have any interest in any form of running store in case readers are asking themselves that question). You should also tell them your plans and ask them if you can pick their brains for any information you'll need to finish the different length races. There are different strategies, training programs, etc for all types of races. I like some of the programs offered at runnersworld.com, where they lay out daily requirements to finish your race.
Don't be afraid to ask questions, and finally there is one other resource which I think is the best. Join a local running club. The camaraderie and friendships you'll create will help you race-wise and socially. I love my local club and those who join usually feel the same. But, don't just join.... go to one of their events, tell them you're a new member and let what happens happen... I guarantee you, you'll be satisfied.
I nearly forgot, ther was one person who was concerned about the training for the Miami Half Marathon on Jan 25th. You've got plenty of time to get yourself ready. Maybe, I'll see you there since I'm doing the full -- for the 3rd time in 4 years.... Love Miami!!!!
But, you're right it's difficult training for Miami in the cold, but just try to finish --- you'll do it.... don't try to set a too high standard for yourself since the weather can cause havoc with the best of plans... 2 years ago, I ran it and didn't even get to see South Beach because the rain was so heavy (It nearly never rains in Miami in January -- but the sky opened that day) and afterwards the humidity and heat got to me and all I wanted to do was to just finish -- I finished with my worst time ever, but I was just as happy since I finished it.
Also, make certain you get there a few days in advance to somewhat become used to the temperature change and also to enjoy Miami! Did I say I love Miaimi?!!!
Whoops, just noticied that my screen name changed from Rogerd430 to my old screen name-- as you can see I don't usually write too many comments -- but do so when I think we need encouragement.
Run safe and strong fellow runners......