Dreadmill... I mean treadmill

I am not a fan of the treadmill. I try to run my three miles and I just can do it. I also think that's what wrong with my feet. It must be my form on the treadmill because after 1/2 mile my feet were killing me. Yet I ran 3 miles outside just 2 days before with NO PAIN. Also the treadmill is boring. So today on the treadmill I only ran 1.6 miles and then did ab work. Tomorrow I want to run outside but it probably won't happen since I have to stay home with the kids. (the sitter is sick and my husband stayed home today so now its my turn)