I'm assuming you're being oriented for FT driving in these comments, so if not, they may not apply.
In the grand scheme of things, what's a long day driving (or two) compared to what may be a life changing decision? I'm guessing you're in a very rural area and typically UPS FT drivers in those areas make a GREAT salary compared to most and live very well. Plus rural routes, compared to suburban ones, you get a lot of window time and fewer times on and off the car, so the wear and tear on your body may not be as tough. Based on that, I'd say it's worth the drive to find out. I don't think they would send you to orientation if you weren't going to be hired, but I could be wrong.