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The Rules and the Feel of Running in Illegal Shoes

Ryan Heisler
February 23, 2025

Much has been made over the last couple of weeks about so-called illegal running shoes — shoes that are prohibited by World Athletics, and are in turn banned from most triathlon races. First was the news that IRONMAN had updated its list of Prohibited Running Shoes for the first time in two years, along with some dissection of the ruleset being non-exhaustive. And then there was the men’s USATF 100 mile road champion, disqualified for wearing HOKA’s Skyward X.

We’re going to take a look under the hood of the regulations, the why behind those regulations, and what it’s then like to run in shoes that aren’t legal for racing purposes.


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BrooksHOKARun Shoes

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  1. Here is a list of shoes that exceed 40mm rule

    № Brand Model Heel Height Banned Reference WebSite
    1 Asics SUPERBLAST 45.5 :white_check_mark: Site
    2 Hoka Skyward X 48 :white_check_mark: Site
    3 Asics Novablast 4 41.5 :white_check_mark: Site
    4 Asics Nova Blast 5 41.5 :white_check_mark: Site
    5 Puma MagMax Nitro 47 :white_check_mark: Site
    6 Saucony Kinvara Pro 42 :white_check_mark: Site
    7 New Balance FuelCell SuperComp Trainer 47 :white_check_mark: Site
    8 Adidas Adizero Prime X Strung 49.5 :white_check_mark: Site
    9 Adidas Adizero Prime X 2 Strung 48 :white_check_mark: Site
    10 Adidas Adizero Prime X 50 :white_check_mark: Site
    11 Mizuno Wave Sky 8 42 :x::question: Site
    12 Asics Trabuco Max 3 43 :x::question: Site
    13 Asics Trabuco Max 2 43 :x::question: Site
    14 Adidas Switch FWD 2 46 :x::question: Site
    15 Asics SUPERBLAST 2 45.5 :x::question: Site
    16 Hoka Stinson 7 42 :x::question: Site
    17 Mizuno Neo Vista 44.5 :x::question: Site
    18 Skechers Max Cushioning Elite 42.3 :x::question: Site
    19 Asics Magic Speed 4 43.5 :x::question: Site
    20 Hoka Mach X 2 46 :x::question: Site
    21 Saucony Hurricane 24 42 :x::question: Site
    22 Brooks Glycerin Max 47 :x::question: Site
    23 Asics Glideride Max 44 :x::question: Site
    24 ASICS GlideRide 3 42 :x::question: Site
    25 ASICS Gel Nimbus 27 44 :x::question: Site
    26 Kailas Fuga Elite 2 41 :x::question: Site
    27 New Balance Fresh Foam X More V5 43 :x::question: Site
    28 New Balance Fresh Foam X Hierro V9 42 :x::question: Site
    29 Puma Fast-RB Nitro Elite 58 :x::question: Site
    30 Hoka Bondi 9 43 :x::question: Site

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