The traditional recommendation is to change out every 300-500 miles. When exactly you change out is based on feel. Since I already track miles on Daily Mile, I also track my gear there so I know exactly how many miles they've run. But today, I used a new determinant:
|Guess which pair is new.|
My current shoes smell SO bad, it was time for a switch. Though they were shy of 400 miles, they've been through a lot. Just carrying them outside to take this picture required holding my breath.
Even I have limits.