Ever since I took up running I’ve run in Asics. The size is right and I like the cushioning. For many years I bought their GT2000 shoes and they served me well. Until my old ones had to be replaced and I went to the store to pick up a new pair. I didn’t give it too much thought, I just bought the latest model and went home. Turns out, that was a mistake.
Usually when I buy new shoes, I alternate pairs for a few weeks until the new ones are sufficiently broken in. Then I switch to using them all the time. I recycle my old shoes to become every day shoes for gardening, grocery shopping etc.
This time that did not go so well. Shortly after I started running with my new shoes I noticed a muscle ache in my right leg, going up to my knee. It would hit me about 3km into my run. It wasn’t impossible to finish my runs, it just wasn’t comfortable to keep up the pace. I did not realize it was connected to the new shoes until I did an outdoor mud run in my old shoes and completed it without any pain. That made me realize that my new shoes were to blame.
I tried to find a “new” old pair on the internet but without any luck. So I went back to the store and after some tips from the store manager went home with the Cumulus 2A, the narrow version. It took some getting used to but pretty soon I loved them so much that I went back to buy a second pair, which I use indoors on the treadmill and as backup for when my outdoor shoes are done.
The moral to this story? Even if you buy the same shoes over and over again, they don’t necessarily have the same fit year after year. Sometimes companies make changes that don’t improve your running, as was the case for me. I was lucky to find a replacement that fits me even better. So when you buy new running shoes, always test them in store (treadmill) and make sure the store has a return policy for worn shoes (they sure are expensive enough).