Will I Ever Have Endurance Outside? During a Race?

I can run forever indoors. Ok, not forever, but 46 minutes, at least! That often seems like forever, so I think my statement is valid.

Anyway, once I get outside, even on a lovely day, it seems I can't run nearly that long. Some of it, I know, is mental. But I also worry that I am training myself to be a wuss.

Admittedly, I have no big desire to run outside in Atlanta in July. But I need to be able to handle running outside the safety and ease of my air-conditioned indoor track.

Sigh.

I don't wanna.