When should you replace your running shoes?

replace shoes rules:
rule #1 = any shoe that has gotten wet and been used, and will now be
used again for running should not be older than 6 months.
rule #2 = any shoe with over 300 miles... walking/running/standing(1 hour of standing = 1 mile i guess).
rule #3 = any shoe that has obvious wear patterns on the tread.


u can't wait to buy a different looking shoe?  far-get-about-it.  if it aint broke don't fix it. order the same exact shoe if possible.  unless u are in the wrong shoe... then get the right shoe.


which shoe is the right shoe?  there is a ton of articles written about this but if u don't already have the right shoe (you've never been shown the right shoe by a professional or your current shoe is hurting your feet/ankles/knees or lower back) then get to a good running shoe store (not Footlocker or DSW) and get fitted by a professional who knows what they are talking about.