Sponsored
Brought to you with a little help from friends. Trailhead’s Sponsored section is where we publish content produced with brand partners — gear roundups, training and nutrition guides, athlete features, and event stories supported by UltraSignup’s brand partners. Every sponsored piece is clearly labeled and edited to the same editorial standard as the rest of the site. Brought to you by UltraSignup, the world’s leading trail running registration platform.
Want to partner with UltraSignup?
Reach trail and ultrarunners at scale through UltraSignup’s media and registration platform — email michael@ultrasignup.com.
A Practical Guide to Hydration for Trail Runners
A practical guide to hydration for several common trail racing scenarios along with input to adapt your hydration strategy to the conditions.
Jane Maus
May 29, 2026
Dirty Dozen: 12 of the Best Trail Shoes for Running in the Mud
Springtime running often means running on muddy trails. That’s OK if you’re wearing the right pair of shoes, specifically a pair of toothy trail runners with an outsole that boasts sizable lugs.
Brian Metzler
April 6, 2026
Training & Treadmills With David Roche
Want to steal treadmill secrets from one of the fastest 100-mile minds in the U.S.?
UltraSignup
November 5, 2025
Why Ultrarunners Need to Embrace ALL Training Zones
Is Zone 2 the endurance hero it’s cooked up to be? Yes, and no.
UltraSignup
November 2, 2025
Your Quick Guide to Tapering: Frequently Asked Questions
Learn the science behind perfecting your taper with help from CTS coach, Jim Rutberg.
UltraSignup
August 15, 2025
Running the Circle of Hell: in Pursuit of a Full Life
In the peak of the Phoenix summer heat, an unsanctioned, unpromoted, unknown fatass race takes place. Despite sky high temperatures, runners leave the climate controlled comfort of their homes to enter the Circle of Hell. UltraSignup and LMNT sent Annemarie to check it out.
Annemarie Kruse
July 28, 2025
Foot Care 201
How do you take care of your feet before they start showing signs of trouble?
Jess Mena
July 14, 2025
Your Quick Guide to Heat Acclimation: Frequently Asked Questions
Learn about the basics of effective heat training from the experts at CTS.
UltraSignup
June 30, 2025
How to not DNF a 100-miler
You’ve already spent your money and time on training, so let’s make it to the finish line, eh?
Heather Balogh Rochfort
June 2, 2025
How Carrie Meng is Training for WSER from Flat Florida
Carrie Meng is chasing a Western States silver buckle—training for 18,000 feet of vert from pancake-flat Florida. See how she’s getting race-ready as a flatlander!
Emily Halnon
April 24, 2025