You might be able to stretch them some. But if they are hurting you feet that bad then I think you should look into a different size. I don't know where you purchased from but I suggest going to an actual Redwing store, at least for your first pair or RW. I did 15 years ago. They will measure your feet and find pressure points around your foot and sole. I'm not talking about the slide ruler thing in Foot Locker I am talking a contraption with handles you have to step into. Then suggest a style such as pull-on or lace-up, ankle, 3/4..... and sizes. My feet are pretty close to the same and I have bought other pairs of RW other places. My brother, however, has one foot almost a size bigger than the other and he buys all his at the RW store and gets one boot a completely different size than the other. Add on the lifetime maintenance you about can't go wrong there.