For the best part of a decade the picture at the front of a World Marathon Major has been simple: count the athletes in Nike Alphaflys and Vaporflys and watch them win. Monday's 130th Boston Marathon resets the picture. John Korir's course-record 2:01:52 was run in an unreleased Asics MetaSpeed Sky prototype; Sharon Lokedi's 2:18:51 defence was achieved in a pair of Under Armour Velociti Elite 3s, the same model she wore last year. Between them, the two winners gave Nike no share of the men's or women's crowns for the first time at Boston since 2015 and produced the most consequential super-shoe result of the post-Kiptum era.
The Korir shoe is a more significant technical story than the result alone implies. Officially designated only as an "Asics protoype Metaspeed" by the brand's Japan-based research team, the white upper carried no retail logos and has not yet been given a public release date. Asics staff in Boston described it as the evolution of the Metaspeed Sky Paris 2 launched last summer, with a new-generation FF Blast Turbo Plus midsole, a reshaped full-length carbon plate and a claimed weight of around 180g in a men's 9. The brand plans to run the shoe through Sunday's London Marathon, where it will appear on the feet of the Asics-sponsored contingent led by Deresa Geleta, before a commercial launch later in 2026.
Under Armour's win with Lokedi is a quieter but no less notable moment. The Velociti Elite 3, released globally in September 2025 at $250, has been Lokedi's race shoe for both of her Boston victories and has now collected two of the six fastest women's times in race history. Under Armour has just 18 paid elite road athletes worldwide, a fraction of Nike's or Asics's rosters, and the in-house team in Baltimore has been transparent that it is using Lokedi's performances to drive a broader push into the distance running category. Expect a Velociti Elite 4 later this year.
Behind the winners the picture was more familiar. Nike still placed four runners in the men's top 10, most of them in a race prototype of the Alphafly 4 that is expected to launch commercially in August; Adidas put three athletes into the top 10 in the Adios Pro Evo 2 and is said to be closing on a sub-100g half marathon racer. Puma's Deviate Nitro Elite 4, which launched last month in Boston-specific colourways, showed up on several sub-elite professional feet including those of American second-seed Clayton Young, who ran a lifetime best 2:05:41 for 11th. Hoka's Cielo X1 3.0 took Alex Masai under 2:07 for the first time, while Tracksmith's new Eliot Ryder Max Cushion appeared in sub-elite charity waves behind the first two waves.
For the wider industry the take-away from Monday is straightforward: the super-shoe category has diversified to a point where race results no longer cleanly predict which brand will dominate the next season's marketing cycle. The Asics protoype on Korir's feet will bring the brand's first Boston men's title of the modern era, and Under Armour's back-to-back Lokedi wins open a conversation about a brand that, three years ago, was not widely considered a player in the distance racing market. Consumers will not be able to buy Korir's shoe for several months yet — but for Asics and Under Armour, the more important fact is that, on marathon running's biggest Monday, they did the buying first.