The answer to that is yes.
I just did an easy three miles to calibrate that damn Nike+.
I also tried out the Map My Run iPhone app, which I must say, I really liked. If you don’t have the Nike+, I totally recommend it. The only downside is that — like any other iPhone app — you can’t use other apps. There’s a Pro version for $4.99 and a free version. I downloaded the Pro version and it lets you control the iPod portion of your phone while running, which is a nice (and necessary) plus. The best part of it? It, true to name, maps your run. I wish the Nike+ did that. Might I be a ginormous tool and run two different iPhone apps when I run in the future? Perhaps.