On IRONMAN and Prohibited Running Shoes

February 12, 2025

Super shoes are back in the news a bit, as careful eyes have noticed that IRONMAN has recently updated its list of Prohibited Running Shoes. The list, updated about a week ago, is the first time it’s been revised in almost two years.

Without burying the lede, here are the specific shoes that IRONMAN calls out as banned:

• Adidas: Adizero Prime X / Adizero Prime X Strung / Adizero Prime X 2 Strung
• Asics: SUPERBLAST/Novablast 4/Nova Blast 5
• New Balance: FuelCell SuperComp Trainer
• Saucony: Kinvara Pro

– Slowswitch