These seem to outlast any other athletic shoes I've owned.  Even though these are Training shoes, I use them as walking shoes.  I have been very happy with them.  Other shoes, including lightweight New Balance walkers, will last 2-3 months.  I easily get 6 months (over 1,100 miles) of use on hard surfaces(sidewalks and paved bike trails).  Last pair lasted over a year.

The fit is good but not perfect.  I have a wide foot -pretty much an E width but a narrow heal.  These D's are snug when new but within a week fit perfectly.