worth going to a lighter shoe for marathon? (currently 13 ounces)

When is your marathon? If it is a fall marathon, I would be hesitant to change anything as you might not have enough time to try things out (given your injury prone feelings, though is that just a feeling or do you really get injured all the time?)

If you're looking to spring for a race, that changes things. I'd get a shoe in the 8 to 10 oz range that feels good to you, and I'd practice running in it one or two days a week. Do maybe one MP or tempo run in them and one easy/recovery run in them. You'll know how your body responds to them and the race won't be a shocker on your achilles or calves or any other body part that could fail you in the marathon.

Also, your half PR is waaaay better than your other races. Were they done at different times? Either way, that half suggest that sub 3 is possible for you.

It's very sensible to have an every day training shoe and a lighter pair for Tempo runs and races. But since you've been running exclusively in Glycerins it may not be a good idea to roll the dice with a new model just before an important marathon.

Also, if you race at 170 lbs rather than 175, the weight savings would be far greater than a few shoe ounces.

Good luck with whatever you decide.

lighter shoes = faster times if your legs can handle it.

I would mix in a Launch to your repetoire and youll be ready to run a spring marathon in it after speedwork and tempo in it.

Stick to Glycerine for this go.

Thanks for the advice all.

The half PR was on a very easy course (Tucson - all downhill). I will try to lose a little weight before the race and I think I am in agreement that I need to incorporate the lighter shoe more gradually; maybe for my spring marathon. Good thoughts.

fffdsfdfd wrote:

Thanks for the advice all.

The half PR was on a very easy course (Tucson - all downhill). I will try to lose a little weight before the race and I think I am in agreement that I need to incorporate the lighter shoe more gradually; maybe for my spring marathon. Good thoughts.

Be well. Pounds before ounces, my friend---

A minute per pound?

That seems like a lot

Used to be Rono wrote:

Also, if you race at 170 lbs rather than 175, the weight savings would be far greater than a few shoe ounces.

.

Losing bodyweight does not factor in the same as shoe weight. Losing six ounces of body weight will have negligible effect but 6 oz of shoe weight can make an immense the difference. The extra weight on the feet will significantly tire out the legs more so than extra weight in the midsection of the body. Not saying carrying around extra weight anywhere is a good thing, just not a ll weight is equal.

your math sucks wrote:

Used to be Rono wrote:

Also, if you race at 170 lbs rather than 175, the weight savings would be far greater than a few shoe ounces.

.

Losing bodyweight does not factor in the same as shoe weight. Losing six ounces of body weight will have negligible effect but 6 oz of shoe weight can make an immense the difference. The extra weight on the feet will significantly tire out the legs more so than extra weight in the midsection of the body. Not saying carrying around extra weight anywhere is a good thing, just not a ll weight is equal.

Yes. The situation is rather like in bicycling. Mass in the wheels, crank and pedals and tires (all parts which rotate AND translate) is much more significant than mass in the frame and saddle (which translate).

So what's better? A 9oz Adios BOOST or a true 6oz flat?

your math sucks wrote:

Used to be Rono wrote:

Also, if you race at 170 lbs rather than 175, the weight savings would be far greater than a few shoe ounces.

.

Losing bodyweight does not factor in the same as shoe weight. Losing six ounces of body weight will have negligible effect but 6 oz of shoe weight can make an immense the difference. The extra weight on the feet will significantly tire out the legs more so than extra weight in the midsection of the body. Not saying carrying around extra weight anywhere is a good thing, just not a ll weight is equal.

Never claimed 6 and 6 were equal. And I happen to concur with your statement. My point is that many runners ought to consider dropping weight before messing around with a new shoe that may not necessarily provide what's needed over 26 miles of pavement.

maximum training wrote:

So what's better? A 9oz Adios BOOST or a true 6oz flat?

Ask Gebreselassie.