The old cliche states one cannot fully know another without walking a mile in his shoes. It turns out, one cannot fully trust a shoe review or hype without trying it for oneself. Case in point: my experience with the Saucony Kinvara.
The Kinvaras seem to be a wildly successful shoe for Saucony and a trendsetter for minimalist(ish) shoes. Glowing reviews abound on the intrawebs. Being a researcher, I dug and dug and was fully convinced that the Kinvaras would be perfect for me. I even tried some on a few months ago at a local shop but chose the Brooks PureFlows instead. Even then I planned to buy the Kinvaras if I did not fall in love with the PureFlows.
That is exactly what happened. The PureFlows were not perfect, so after about 400 miles, I purchased some Kinvaras to try. I intentionally purchased from RunningWarehouse.com so I would have the option of returning the Kinvara if they did work out.
First Impression
The Kinvaras are light and streamlined. I like the feel of the shoe and the stride. However, I sounded like a cantering horse in the shoes for the first 100miles or so. Click clack, click clack. I could not figure out why. The soles are almost entirely foam and I am not a big heel striker. While the shoes were quick and light, the cushioning is vastly different from the PureFlows (read nonexistent). That is how it feels. Perhaps the foam is denser but there is not much plushness or noticed absorption of shock. I figured I could deal with the noise and firm strike for the marathon, and I started using the Kinvaras for my marathon pace and faster runs.
After Some Time
It did not take long for me to notice some increased soreness in my legs. When my PureFlows started rubbing on the inside of my big toe and midfoot, I switched almost entirely to the Kinvaras. Soon thereafter, I developed significant soreness in my left calf, ankle, and foot. One day I could barely walk in the morning. I chalked it up to making the shoe change and figured I needed some time for my legs to make the transition. In addition, I was in peak mileage (over 60mpw), so maybe the soreness was a byproduct of that. Regardless, I continued using the Kinvaras and holding onto hope.
Finally
The final straw happened this past week. Due to record-setting snows, I was forced to run on the treadmill 4 days. On the 3rd day, I developed a pea-size blister on the side of my big toe. I don't remember the last time I got a foot blister. The next day, I made 8.5 of a 16miler indoors before relenting. I had developed an identical blister on my left big toe. I could not identify what was causing the blisters, but I cannot risk that happening in the marathon.
Overall
I wanted to like the Kinvara and tried hard to overlook their flaws. Like a relationship, we were "slow dancing in a burning room." No matter how hard we tried or for how long, we just weren't meant for each other. The leg soreness, lack of cushioning, and blisters are evidence (albeit circumstantial) that the shoes are not working, and I cannot take that risk with the race.
What now? I have the same pair of PureFlows with almost 500miles on them. I've been surprisingly impressed with their durability (much better than the kinvaras). I know they work, so I am strongly considering just sticking with them through the next 3 wks (that's it!). Why spend $70 on a new pair to wear for a couple hundred miles if the old ones are working? I think I'd rather stick to them and save that money for something else (maybe some trail shoes)! Hopefully they last and don't irritate my feet too much (calluses are building).
I'm glad I used Running Warehouse and will be mailing the shoes back this afternoon.
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