The Adidas Pro Evo 2 is a $500 race shoe built for marathons, and despite the price, it might just be the most perfect race shoe on the market. Released in limited quantities, it goes head-to-head with top-tier competitors like the Nike Alphafly 3 ($285), Puma Fast-R 3 ($300), and the upcoming ASICS Metaspeed Ray. Here, we’ll share our initial impressions.