Isn't it disheartening when you spot a chunky-looking guy at the starting lineinside you think, Well, at least I won't come in lastand then he pulls away, leaving you sucking wind? The Lava Run is that guy. "They look like they'd be clunky," said one tester, "but I was impressed with how smooth and nimble they are." There's a luxurious amount of cushioning in the Lava's perforated sock liner and thick foam midsole, but, despite that extra cush and a durable, hiker-inspired Vibram sole, it doesn't ride like a tank. True, it isn't nearly as agile as a race-tuned model, but the overall package is still fleet enough for hardpacked trails. 13 oz; hi-tec.comBonus: Water-resistant uppers kept our feet dry in damp conditions.Bummer: For the weight, it should have better toe and upper reinforcements.