Puma claims the Fast-R Nitro Elite 3 is its "fastest ever running shoe," primed for use in the London and Boston marathons.

Puma Fast-R 3 Feel From the moment you step into the Fast-R Nitro Elite 3, it’s clear this shoe means business.

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As such, the Fast-R Nitro Elite 3 represents the biggest jump in efficiency since the Vaporfly was tested almost 10 years ago. Offering a 3.15 percent increase in efficiency over the competition, the ...

You get the Puma Fast-RB (‘rule breaking’) Nitro Elite – an unashamed, attention-grabbing shoe designed specifically for those who want to run rapidly and rebelliously.

Puma has just revealed its fastest-ever shoe for race day, the Fast-R Nitro Elite 3 – so we put it through its paces to give you our verdict.

The Puma Fast-R Nitro Elite 3 will release in limited quantities at Puma's Boston Marathon experience located at 745 Boylston Street on April 18 for $300.

Official pictures, pricing, and tech specs for upcoming release of the PUMA Fast-R NITRO Elite 3 running shoes.