I trained on Duranos all last summer. True to claims, I got almost seven thousand miles before wearing out. That said, this is a high-mileage tire, not a bullet proof commuter. Your going to get the normal occasional flat, sorry, facts of life. Buy Conti Gatorskins if you cannot deal with flats. But, if you want a high mileage training tire that rides like a PERFORMANCE tire, this is a good bet.
In 2016 I rode the TransAm across the USA (about 4300 miles). I had no flat tires on the bike the whole trip using 700x 35 tires. I think that says it all. I use them all year long, mostly on pavement but also on gravel.
Nothing will take you out faster than ice. The SCHWALBE MARATHON WINTER offers the puncture protection you expect from a Marathon tire plus a constellation of tiny studs to give you confidence on those frosty morinings. I wouldn't say this is a snow tire, because snow can take a lot of forms. But if theres ice in the mix this is the tire for you.
I commute 10 miles a day in the Emerald City. I wanted a tire that helped my visibility during the short, rainy days of winter, while providing reliable durability for the potholes and debris encountered. This tire has succeeded at both. The illuminating strip on the sidewall is very visible, and the tread with Smartguard technology provides puncture protection. I am a fan!