4.1K 
Jim Walmsley leaves it all on the course as he approaches the finish line of the Project Carbon X 2 100K in Arizona. He finished in 6:09:26, missing the world record by just 12 seconds. Photo courtesy HOKA ONE ONE
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Features
- Spring Running Bra Review Compiled by Donald Buraglio, Product testing by Giana Buraglio, Amy Clark, Tiffany Clayton, Melissa Gunner and Shel Johnson
- Fastest Known Times of the Year by Buzz Burrell
- Project Carbon X 2 by Jeffrey Stern
ultracoach
- From the Coach Growing as a Runner by Ian Sharman
- Koop’s Corner Psychobiological Model of Fatigue by Jason Koop
- Movin’ on Up So You Want to be an Ultrarunner? by Meghan Canfield
- Tricks of the Trade Easy Like Spring Training by Sean Meissner
ultrageek
- Ultrarunning Science Let Me Repeat That for You by Matt Laye
- Pete’s Perspective Reflections From Our Time Away by Pete Kostelnick
- Ultra Doc Running After COVID-19 by Tracy Beth Høeg, MD, PhD
- The Voice of the Sport Finding Purpose by John Trent
- View from the Open Road Faces Across America by Gary Cantrell
ultraraces
- The Falls 100 by Gary Dudney
- Guana River by Mark Ryan
- Long Haul 100 by Jodi Weiss
- Tunnel Hill 100 by Steve Durbin, RD
ultralife
- Reese’s Pieces The Unsung Heroes of Ultrarunning by Cory Reese
- Destination Unknown Fit to Continue by Jeff Kozak
- One Step Beyond Training Versus Maintaining by Dean Karnazes
- Sarah’s Stories Know Your Motivators by Sarah Lavender Smith
- Running Down Under Embracing Transition by Lucy Bartholomew
- I Am an Ultrarunner Van Phan by Erika Hoagland