Used for practice (triathlon). Approximately 300km of running distance. The soles still have plenty of rebound. The "on" logo has peeled off slightly due to several washes. How about using them for marathon races or carbon shoe practice? *Cleaned *No original laces included. Recommended for those looking for on, cloudboomecho3, cloudboomstrike, cloudboomstrikels, cloudmonster, carbon shoes, Metaspeed, Magic Speed, Vaporfly, Air Zoom Victory, Dragonfly, Alphafly, Pegasus, Pegasus Turbo, marathon, and triathlon shoes!