This is how I know I am a cyclist and not a runner. Back when I was running marathons and halfs more regularly, my training partner and I would have a heck of a time trying to figure out splits, mph, etc. We just couldn't do simple math for the life of us while we were running.

Now that I am riding, math is a lot easier for some reason. It's as if my brain's not a stressed out when I am riding a bike, but I just become stupid when I run. Of course, you're working with much bigger numbers, which is gratifying also.

I also play songs in my head. I talk to animals constantly. You can play the ABC game if there are any road signs around. Just don't start asking yourself over and over "When are we gonna be there?" :P