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STORES - Available as of November 17, 2019 8:34:23 AM EST


Traverse the toughest terrain in no time with these award-winning ultralight, race-ready trail runners designed in collaboration with TNF ultrarunner Rob Krar. The energy-retaining FastFoam midsole is tuned for speed, and the low-profile sole has multi-directional lugs for superior traction.


  • Featherweight race-day shoes with a soft yet responsive midsole
  • Named the Best Lightweight Trail Running Shoe by Gear Institute
  • Flight Series™ performance running gear is race-day ready, and a pure example of athlete-lead, progressive design
  • Co-designed with Rob Krar, the world's leading ultra runner who single handedly changed the face of trail running to be lighter and faster
  • Upper: breathable and lightweight engineered mesh
  • TPU-welded geo quarter for midfoot support and stability
  • Comfortable mesh and suede tongue minimizes sweat and water retention
  • Southwest-inspired design
  • OrthoLite® footbed for long-lasting comfort
  • Sole: 18 mm/10 mm heel/forefoot EVA underfoot
  • Dual-density FastFoam™ midsole for speed, stability and comfort
  • Cushioned EVA in bottom layer of midsole for increased comfort
  • Resilient EVA underfoot prevents packing out
  • Multi-directional lug design provides superior traction
  • "Podular" outsole maximizes weight reduction by placing sticky rubber only where it's demanded
  • 8 mm offset

Product Specifications

Approx Weight (½ pair):
8 oz (227 g)
Limited one-year warranty
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