I LOVE pretending I'm someone (or somewhere) else when I run outside.
I've been really into the Women's World Cup soccer tournament. Today as I was running I imagined I was a fit, toned, elite female soccer player jogging lightly onto the field in Germany as my ponytail was bouncing in the wind.
Sometimes I pretend I'm a model or someone whose gorgeous and in shape. Like the Allstate commercial where the guy is jogging and says "I'm out making sure that this stays a 10." I imagine that I'm working out to "stay a 10" rather than lose weight.
Sometimes I'm barefoot and jogging on the beach with a hot guy next to me, on vacation in the Caribbean. In this fantasy I tell myself I can jump in the water when I'm done.
Also depending on what action movies I've seen lately, I imagine I'm the @ss-kicking chick as I run (ie Trinity from the Matrix).
I think it just helps to imagine myself as being thin and fit while I'm running, rather than feeling like a fat girl trying to catch her breath.