The sole must be no thicker than 40mm. The shoe must not contain more than one rigid embedded plate or blade (of any material) that runs either the full length or only part of the length of the shoe. The plate may be in more than one part but those parts must be located sequentially in one plane (not stacked or in parallel) and must not overlap
这是在去年 10 月的铁人三项世界锦标赛中赢得冠军的 Gustav Iden穿的跑鞋。
Iden 在 Kona 穿的 On Cloudboom Echo 3 鞋底厚度超过 40 毫米，但是对公众卖的鞋底是35毫米，也就是说他的夺冠鞋子是特别改良过的。
Chelsea Sodaro在Kona获胜时穿的 Asics Metaspeed Sky+， Kristian Blummenfelt也穿这个牌子，有 39 毫米的rear stack height.
另外，世界三项比赛的规则遵循 World Athletics 的规则，要求任何参赛鞋必须“在公开零售市场（在线或商店）上可供任何运动员购买四个月，然后才能用于比赛 ”。更新后的政策可以在 Ironman 比赛规则的第 6.02 节中找到。
The Nike ZoomX Vaporfly Next% 2 is still a superlight racing powerhouse with excellent cushioning and propulsion. What makes it so special is its unique forefoot geometry that provides a forward-tipping sensation during each toe-off.
This version is an upper-only update that improves the fit and comfort of the shoe. The Nike Alphafly Next% 2 is a super shoe which was designed for narrow-footed runners and runners with high arches because it has a very narrow midfoot. It’s best suited to short, fast-paced workouts rather than long runs because of its firmer ride and prominent arch. This version has been updated with a new, snugger Atomknit 2 upper, a more durable, flatter outsole and a wider, more stable midsole.
现在ironman将跟随这个规定。新规则规定：
The sole must be no thicker than 40mm. The shoe must not contain more than one rigid embedded plate or blade (of any material) that runs either the full length or only part of the length of the shoe. The plate may be in more than one part but those parts must be located sequentially in one plane (not stacked or in parallel) and must not overlap这是在去年 10 月的铁人三项世界锦标赛中赢得冠军的 Gustav Iden穿的跑鞋。
Iden 在 Kona 穿的 On Cloudboom Echo 3 鞋底厚度超过 40 毫米，但是对公众卖的鞋底是35毫米，也就是说他的夺冠鞋子是特别改良过的。
Chelsea Sodaro在Kona获胜时穿的 Asics Metaspeed Sky+， Kristian Blummenfelt也穿这个牌子，有 39 毫米的rear stack height.
另外，世界三项比赛的规则遵循 World Athletics 的规则，要求任何参赛鞋必须“在公开零售市场（在线或商店）上可供任何运动员购买四个月，然后才能用于比赛 ”。更新后的政策可以在 Ironman 比赛规则的第 6.02 节中找到。
这个是为了给所有参赛的运动员一个公平竞争的机会，很多运动员不能负担昂贵的神鞋，更不要说专门为他们定制的跑鞋。但是，道高一尺，魔高一丈，以后就会有很多39.5mm的鞋底厚度参赛，lol
更多我的博客文章>>> 铁人三项正式禁止厚底神鞋参赛 十八英里跑。美丽的杏花季节 爱美丽的小二比赛和杏花盛开 一个娇滴滴娃的成长 晨跑
当然，我们这种age grouper他们估计不会care，但是pro们不能穿了，除非和厂家特制 39.55 mm
不过对age group来说，游完泳骑完车，穿不穿神鞋区别都不是很大哈哈
The Nike ZoomX Vaporfly Next% 2 is still a superlight racing powerhouse with excellent cushioning and propulsion. What makes it so special is its unique forefoot geometry that provides a forward-tipping sensation during each toe-off.
This version is an upper-only update that improves the fit and comfort of the shoe. The Nike Alphafly Next% 2 is a super shoe which was designed for narrow-footed runners and runners with high arches because it has a very narrow midfoot. It’s best suited to short, fast-paced workouts rather than long runs because of its firmer ride and prominent arch. This version has been updated with a new, snugger Atomknit 2 upper, a more durable, flatter outsole and a wider, more stable midsole.
正好是40mm.
Adizero那个50mm，被禁了。
这不禁的话，以后就会有6公分，7公分。长此以往，得有多少跑者崴脚！
矮个子男生穿着去约会不错。
技术/材料上的局限，厚底的目的是cushioning减轻肌肉疲劳，但必定增加重量牺牲速度。现在材料科学/生物力学都有了十足的进步