Being in shape for the gym and the real world. Is there a difference?

I have pretty much the opposite reaction, have a difficult time getting going on the treadmill and keeping at it. When I travel to an area I don't know, I'll usually use the treadmill since it is easy on/off, but that easy on/off means that after 15 minutes I'll start to think of getting off of it. For me to stay on a treadmill for 30 minutes straight through is a long time. While I'm at home, I run outside on weekends, there's a pathway that goes alongside a canal near where I live. I go about 1-1/2 mile north, turn around, pass where I started (but on the other side of the canal), then go 1-1/2 to 2 miles south before heading back. There are times when my stomach or an odd muscle will start to bother me, usually around the final turn point. The way I see it at that point is that I need to get back anyway, so I might as well keep running, and either the ache goes away or I lose track of it. I do carry a mobile phone with me, in case something unexpected happens. When I run outside, I can easily run for an hour (7+ miles) without really thinking about it. It is a somewhat scenic path past some farms, a small airport, and some backyards, with just a few points where I cross streets. I think my swimming is similar. Ever since I moved to AZ and have been swimming outside, it is extremely difficult for me to swim inside. This morning the outside temp was about 35, but the water was a toasty 80, and I'd gladly take that over swimming inside anyday. When I go to a place where I have to swim inside, I'll do it, but never really get as much out of it, and feel much more tired afterwards.

I have pretty much the opposite reaction, have a difficult time getting going on the treadmill and keeping at it. When I travel to an area I don't know, I'll usually use the treadmill since it is easy on/off, but that easy on/off means that after 15 minutes I'll start to think of getting off of it. For me to stay on a treadmill for 30 minutes straight through is a long time. While I'm at home, I run outside on weekends, there's a pathway that goes alongside a canal near where I live. I go about 1-1/2 mile north, turn around, pass where I started (but on the other side of the canal), then go 1-1/2 to 2 miles south before heading back. There are times when my stomach or an odd muscle will start to bother me, usually around the final turn point. The way I see it at that point is that I need to get back anyway, so I might as well keep running, and either the ache goes away or I lose track of it. I do carry a mobile phone with me, in case something unexpected happens. When I run outside, I can easily run for an hour (7+ miles) without really thinking about it. It is a somewhat scenic path past some farms, a small airport, and some backyards, with just a few points where I cross streets. I think my swimming is similar. Ever since I moved to AZ and have been swimming outside, it is extremely difficult for me to swim inside. This morning the outside temp was about 35, but the water was a toasty 80, and I'd gladly take that over swimming inside anyday. When I go to a place where I have to swim inside, I'll do it, but never really get as much out of it, and feel much more tired afterwards.