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1. www.irunfar.com › rudy-project-spinshield-air-reviewRudy Project Spinshield Air Review – iRunFar

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   10 hours ago · Rudy Project Spinshield Air Fit. The Rudy Project Spinshield Air uses a pair of design elements that are essential to making them great-fitting sunglasses. First is the very effective non-slip compression fit of the frame, which uses secure wraparound geometry that isn’t too tight. The ear and nose ergo-grip rubber pieces maintain very good ...

2. www.irunfar.com › ultrarunning-growth-in-the-u-sUltrarunning Growth in the U.S. Through a Geographic Lens

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   10 hours ago · Ultrarunning is on the rise. Many people have probably seen a plot similar to the one below. This graph shows the number of ultra events in the U.S. over the years. Since 2000, the number of races in our dataset has grown from 233 to 2033, a 772% increase. Number of ultramarathons in the U.S. over time.