Windy...and Windy

It was just a little windy today. Combine that with dead-feeling legs and I only went 4 miles. I hate cutting a run short and coming up with excuses, but I could tell today wasn't going anywhere. And my knees aren't feeling good. Yeah, I know, more excuses. Just not one of my better runs, but one where I think I cut my losses. I'd like to think I'm a smarter runner than I used to be in stopping and avoiding grinding out the last two miles just to add the miles to my weekly total, but sometimes I wonder. Clearly I can finish a half-marathon, but the question is how well will I finish? And how will today's run figure into how it works out?