Caleb Olson – Nike Radical AirFlow shirt – 2025 Western States 100
Caleb Olson sporting the Nike Radical AirFlow long sleeve while crossing the American River en route to winning the 2025 Western States 100. Photo: iRunFar/Bryon Powell
Bryon Powell is the Founding Editor of iRunFar. He’s been writing about trail running, ultrarunning, and running gear for nearly 20 years. Aside from iRunFar, he’s authored the books Relentless Forward Progress: A Guide to Running Ultramarathons and Where the Road Ends: A Guide to Trail Running, been a contributing editor at Trail Runner magazine, written for publications including Outside, Sierra, Ultrarunning, and Running Times, and coached ultrarunners of all abilities. Based in Silverton, Colorado, Bryon is an avid trail runner and ultrarunner who competes in events from the Hardrock 100 Mile just out his front door to races long and short around the world, that is, when he’s not fly fishing or tending to his garden.
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