{"id":230148,"date":"2025-10-07T10:44:40","date_gmt":"2025-10-07T10:44:40","guid":{"rendered":"https:\/\/worldmarathoner.com\/?p=230148"},"modified":"2025-10-07T10:44:40","modified_gmt":"2025-10-07T10:44:40","slug":"nike-dev-16141-prototype-of-new-shoes-for-the-2025-chicago-marathon-is-this-the-alphafly-4","status":"publish","type":"post","link":"https:\/\/worldmarathoner.com\/en\/nike-dev-16141-prototype-of-new-shoes-for-the-2025-chicago-marathon-is-this-the-alphafly-4\/","title":{"rendered":"Nike-Dev 16141 \u2013 Prototype of New Shoes for the 2025 Chicago Marathon. Is This the Alphafly 4?"},"content":{"rendered":"

Nike-Dev 16141 \u2013 Prototype of New Shoes for the 2025 Chicago Marathon. Is This the Alphafly 4?<\/strong><\/h2>\n

Just days before the 2025 Chicago Marathon, shoes labeled Nike-Dev 16141 appeared on the official World Athletics list, making them eligible for competition from October 2, 2025, to October 1, 2026. This is not a retail name \u2013 in the running world, such designations are standard for prototypes tested by elite athletes and key brand ambassadors. Before the public sees a new generation, these shoes carry a \u201cworking\u201d name under which new solutions and innovations are tested.<\/p>\n

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Why Is the Appearance of a Prototype So Important?<\/strong><\/h4>\n

In practice, when footwear with a special product code appears on the start list or the list of approved models, the running community reads it as a clear signal: a new generation of performance shoes is coming. History shows that both the Vaporfly and Alphafly debuted at major marathons as \u201cprojects\u201d without a retail name. Nike consistently launches its most advanced models at prestigious sporting events like the Chicago Marathon to immediately showcase them to the world.<\/p>\n

Will This Be the Alphafly 4?<\/strong><\/h4>\n

With Nike-Dev 16141, the natural question arises: is this the announcement of the fourth generation of the legendary Alphafly? At this moment, there is no official confirmation \u2013 all we know is the presence of the prototype and, as always, a wave of speculation among industry portals, running communities, and experts. However, the very fact that the world\u2019s elite can legally race in this model in Chicago shows that we\u2019re close to another major launch in the world of elite running.<\/p>\n

How Do Nike\u2019s Designations and Prototype Testing Work?<\/strong><\/h4>\n

Nike uses factory codes for models not yet released to the market \u2013 these numbers are one of the primary tools for protecting innovations from competitors and leaks. Athletes receive prototypes to test in real race conditions, and the brand analyzes the results before the official launch. Only models that have passed through the World Athletics list can be used in major running events \u2013 which is why the Nike-Dev 16141 code is now one of the hottest topics ahead of the Chicago Marathon.<\/p>\n

What\u2019s Next? Waiting for the Official Launch<\/strong><\/h4>\n

It\u2019s unknown how many pairs of Nike-Dev 16141 will be shown in Chicago or whether they\u2019ll be presented at the expo or go straight to regular sales. What is certain, however, is that such actions are part of a well-thought-out marketing strategy that Nike has used for years: first, elite testing at a major marathon, then a media teaser, and finally a global launch. Meanwhile, fans and runners will be watching closely to see what top athletes wear and whether the world will get its first official photos and details of the potential Alphafly 4.<\/p>\n

Discover More About the Chicago Marathon<\/strong><\/h4>\n

If you’re interested in other news from Chicago, check out the main category Chicago Marathon<\/a> on WorldMarathoner.com. There you\u2019ll find updates, guides, and reports to help you prepare for the race or stay up to date with the latest marathon developments.<\/p>\n","protected":false},"excerpt":{"rendered":"

Nike-Dev 16141 is a previously unknown prototype running shoe that appeared on the official World Athletics list ahead of the 2025 Chicago Marathon. Is this a preview of the Alphafly 4?<\/p>\n","protected":false},"author":3,"featured_media":230144,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[53],"tags":[],"class_list":["post-230148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chicago-marathon-en"],"_links":{"self":[{"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/posts\/230148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/comments?post=230148"}],"version-history":[{"count":0,"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/posts\/230148\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/media\/230144"}],"wp:attachment":[{"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/media?parent=230148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/categories?post=230148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worldmarathoner.com\/en\/wp-json\/wp\/v2\/tags?post=230148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}