Time wise, perhaps; but miles are miles.

I don't know about them lasting longer. I know I rotate with three different pairs two are the same brand one is different. I have heard that it takes aprox 24 hours to let the cushion expand back to full capacity. So if yourun everyday in the same pair you don't get the full benefit of cushion and support that the shoe is designed to give you. Also it lets the shoe dry out completely which in the summer time help prevent some nasty funk. Hope that helps. ONe more thing I like to buy them at different phases like a month or two apart so they all don't wear out at the same time so I dont have to shell out 300 plus at once.

Rotating will only help in preventing injury, as the first dude stated "miles are miles".

Sldotter is correct. If you rotate, the cushion will perform better and the shoe will be good for a longer period. I saw that on TV from a study.

I think it's a bunch of bullstein. I' did for a while like I was following some religion...Never saw a benefit...except in the summer when shoes "A" were still soaked from the day before's sweaty run. Dry shoe's "B" felt much better.
Other than that, the only place I ever noticed a difference was in the thickness of my wallet.

[quote=sldotter]ONe more thing I like to buy them at different phases like a month or two apart so they all don't wear out at the same time so I dont have to shell out 300 plus at once. [/quote]

Is that like putting $5 of gas in my tank every day so I don't have to shell out $25 at the end of the week?

To answer the question, I have always heard that you can get more miles (not just more time) from a pair of shoes if you run in them less often. However, what I do not know is how much if a difference. Maybe 520 miles instead of just 500 miles per pair? That's just an example, but if it were accurate, it would not be worth the trouble.

I'm confident in saying that if your shoes only get 10 miles per week, you won't extend how many miles they last by buying another pair so they only get 5 miles per week. Like sldotter said, it takes a while for the cushion to expand back. If they get used once every 3 days, the cushion is fine. No reason to let them sit for 6 days.

This explanation makes sense:

"Not wearing the same shoes two days in a row also means that the rubber in the sole of the shoe will have an opportunity to decompress before you wear them again. You are applying a lot of force with each foot strike, and the rubber will get a tiny bit denser and take a little bit of time to go back to it’s normal state. If you never allow it to completely get back to it’s normal uncompressed state, then it’s normal state will begin to default to being a little compressed."

[quote=TryScott]
To answer the question, I have always heard that you can get more miles (not just more time) from a pair of shoes if you run in them less often. However, what I do not know is how much if a difference. Maybe 520 miles instead of just 500 miles per pair? That's just an example, but if it were accurate, it would not be worth the trouble.
[/quote]
This "inter-web" of pages has all kinds of information on rotating running shoes. A Google search found one man's answer for the question I had about how much it helps. Of course just because he wrote a book doesn't mean he's right, but I bet he researched it more than most...

In his book, “The Competitive Runner’s Handbook”, Bob Glover says, “Studies show that by alternating two pairs of shoes they’ll last longer than three pairs used consecutively.” He also says, “Rotated shoes retain 80% of their cushioning after sixty runs of an average of 5 miles (300 total miles) compared to only 60% for those not rotated.”

I dont really rotate my shoes, but I keep my old shoes in case the new ones are wet. I only put 350 to 400 miles a pair, old shoes are a very easy way to injure yourself.

I have a whole bunch of running shoes so I do end up rotating.
Mostly to get them dry. If they decompress that is great.

I can kinda feel when a shoe is getting flat and then they go to the donation pile