The weather sucks!

So what's a girl to do when it's 7 billion degrees outside? I mean... it's freaking hot! Does running on a treadmill count? The gym has AC. I suppose it's better than nothing... but of course I would then have to get up off the couch, go out into the human melting heat and drive to the gym in order to run, which I suck at. But if I don't keep on the program there is no way that I'm going to be able to run the 5K I signed up for. What's a girl to do?