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Want to steal treadmill secrets from one of the fastest 100-mile minds in the U.S.?

Together With By Ryne Anderson, CTS Ultrarunning Pro Coach  Is Zone 2 the endurance hero it’s cooked up to be? Yes, and no. Research into intensity distributions among elite and everyday athletes show that the majority of training volume (about 80% for amateurs and up to 90+% for elites) should be in Zones 1 and 2.…

Learn the science behind perfecting your taper with help from CTS coach, Jim Rutberg.

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.

How do you take care of your feet before they start showing signs of trouble?

Learn about the basics of effective heat training from the experts at CTS.

You’ve already spent your money and time on training, so let’s make it to the finish line, eh?

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!

A Runner's Guide to Smart Hydration

Isometric strength training builds muscle, strengthens and stiffens tendons, and helps prevent injury—making it a powerful, low-skill tool for ultrarunners to train smarter.