This amazes me. I know it makes sense, but still it amazes me. I ran 3.5 miles yesterday w/o my walk breaks and today I did the same run with 3 one minute walks breaks. Time difference 54 seconds. Not a huge difference, but still in that same time I walked 3 minutes. I really do run faster with the walk breaks inserted. I religiously use walk breaks on my long runs. It just doesn't seem to take that long when I'm only doing stuff for 5 minutes at a time. I'm not trying to get a specific time, I just want to finish this half-marathon which is very doable as long as I don't get injured.