Do you Race in your Training shoes?

Be careful with shoes like Newtons.  They're designed for a different type of foot strike, and from what I've heard, if you switch over without having trained in them they'll hurt a lot more than help.

I race and train with the same shoes.  My shoes are light enough that I can't justify a different pair.  Also, I'm training for longer events and will want the extra support on long runs. 

I race and train in different shoes; I will do a few training runs in my flats but for the most part my flats are race day shoes.  They definitely are not designed for high mileage but they feel fast and I'll take that boost on race day.

Currently I'm running two different pairs of flats; a spikeless x-country flat (for non-paved courses) and the adizero racers.

Shane

I train in training shoes and race up to half-marathon distance in a pair of Nike Marathoners.  This is not the ultralighweight racing flat as it has a little support, but is still more flexible than my trainers which helps me go a little faster with less fatigue on race day. 

I do put a few training miles on them so that my feet are used to them. 

90% of my training is in normal, full support/cushioning, running shoes. I do a little bit of barefoot running, and a little bit in racing flats.  All races below marathon are in racing flats.  I've done marathons both ways and haven't noticed a big difference (for me).

When I'm training for a marathon (or half, or 10K), I never run the entire distance as hard as I can for that distance.  In a race, I do.

My point is: This is a nice mantra, and we all like to say it, but there's a difference between being prepared for whatever happens, and doing nothing new -- sometimes being prepared for X entails NOT practicing X.

I wear my racing shoes just for races. I break them and get the feel of them before hand by wearing them to work or school. I train in different shoes.

Just recently, in early August, I went to racing in different shoes than most of my training.  I train in Brooks (primarily)and Sauconys (until I wear out the ones I have) , now I have some lightweight Asics Gel-Banditio for racing.  The Brooks used to be my racing shoes. All are stability shoes and I wear orthotics in them.  I actually have 2 pairs of orthotics, a hard silicon pair and a softer pair.  I train with both orthotics but race with the softer ones.  I did some training in the Asics so they would not be "new" for races.  The 2 races I've used the Asics I set a pr in a triathlon 5 mile run and this last weekend PR'ed a half-marathon.  The Brooks are 11.9 oz, the Asics are 7.9 oz. 

It's gotta make a difference.   C'mon, people buy carbon bottle cages to save a few grams, how about something you're picking up 80+ times per minute?    

I plan to try the Asics on some long runs during my marathon training this fall and if all goes well, wear them for a full marathon at Las Vegas in December.