If you're looking to go all in on that hunt for an elusive PR or qualification time, the Nike Pegasus Turbo 2 Running Shoe is the shoe you want with you on the start line. As the name suggests, this shoe is turbo-charged and then some thanks to Nike's revolutionary ZoomX cushioning, which was developed to help the world's top distance runners break the two-hour marathon mark. ZoomX is the most responsive cushioning that Nike's ever designed, so you're bound to stay light and quick on your feet even when you start to fade late in the race. The soft underfoot feel will keep you comfortable, and the high-performance energy return will keep you ready for your final kick. Meanwhile, a lighter mesh construction keeps the shoe's weight down while maintaining excellent breathability in hot weather, while an angled heel provides smoother heel strikes to keep your stride easy and efficient when you start to fall back in your stride after long miles.