For 15 years and running, literally, the GEL-Kayano remains a perennial favorite for serious runners. How do you improve on perfection? Update to an asymmetrical lacing system for a better fit (your foot is asymmetrical too) and a lighter midsole. Great for long training runs or races, with enough stability to guide the foot through a natural gait. Testers say, ‘Supercomfortable fit. Felt broken in within 10 minutes.’ $140. www.asics.com
