The Kinvara, a highly popular uptempo trainer, is a good example of how for Saucony, “best running shoes” and “fastest running shoes” are nearly synonymous. At just 7.6 ounces, the Kinvara 9 is responsive and light enough to race in for some runners, while for other runners, it’s cushioned, comfortable, and stable enough for daily training. For a lot of runners, it’s both. No need to change shoes in between warming up and lining up at the starting line (or collecting the trophy at the finish).