Any marathoners here???Advice needed!!!

It depends... For running 10k's in 45 minutes, I wouldn't guess you'll be at the back of the pack, nor would you be satisfied there. So, I'm proceeding under the assumption that you want to finish around 3:15-3:45.

Five months is plenty, if you're currently running. If you're at 30 mpw now then you're in great shape. I would progress up to 70-80 mpw (depending on circumstances) up to two weeks before, then taper. Choose hills over speedwork. Do the long runs, test your supplements during those runs (gels, bars, etc.).

If you're at 0 mpw, then it depends on your natural durability. If you never got injured at 100 mpw then your durability shouldn't be an issue, but you've got to start today, tomorrow at the latest.

runnersworld.com has a good marathon-specific forum (iirc). letsrun.com is more racing-oriented but still worth a peek. There are also some good books (Daniel's, Lydiard, etc.), and you might look into a running group, since a lot of training groups form specific to their event.

I ran Houston and am fixin to run it again this January. I had a blast! It took me a week to walk normally afterwards, but I was running again after a few weeks. Crowds were great, the last mile running through downtown was incredible. There were spectators lining the streets cheering each runner on for the last mile until the finish line. Miles 21-25 are hell - rolling concrete hills. Bring extra supplements. and - no matter how early you have to get there - park near the finish line.

I also marathon run. I am an older runner (50+) and no longer believe a sub-3:00 is in my future.

I agree with the advise given. I would also recommend that you join a local running club. You will be able to train with like-minded souls, will get help on form and interval runs, will be able to participate in speed drills, and will be better informed as to shorter races you can use as part of your practice. In Ann Arbor, consider

http://www.aatrackclub.org/

Also, for an easy to access 18 week schedule, go to:

http://www.ingnycmarathon.org/traini...ngschedule.php

if you were running 100 mile weeks you should be a good bit faster than 45 min 10k... i think its better to work on improving speed with intervals and tempo runs before running such high mileage, but i enjoy running at a fast pace and loathe forcing myself to slow down, even on long training runs, so thats just my perspective. Really, anything over about 70 is overkill unless you are a pretty competitive runner. All the extra mileage really does is increase your running efficiency and form through increased repetition but there comes a point of diminishing returns in terms of cardiovascular/aerobic benefit. that said, i too am a relatively high mileage runner (max 80 mpw), so i understand the desire to just put in lots of miles when running is something you really enjoy.

Jwied is correct. If you want to increase speed, you should consider interval running. For example, if there is a track, try to 400m intervals fast, then jog 400, then a fast 400m, then jog another 400m. You need to train your body how to pick up the pace.

After a while, you can increase it to 800m fast and then slow down for 400m. And do it again.