Meet Addie Bracy: Ultra's Upstart Signs with Nike – The Outdoor Journal
Nike Launches Ultrafly Trail Racing Shoe. Nike.com
The Evolution of Trail Running Shoes - Trail Runner Magazine
Zinal, SWITZERLAND - AUGUST 7: Elite runner, Francesco PUPPI (ITA) of Team Nike in the Sierre-Zinal World ChampionshipTrail Race: August 7, 2021 in Z Stock Photo - Alamy
Here's Why It Feels Like Every Elite Runner Is Changing Sponsors Right Now