Articles

By: Jennifer A. Kurtz, PhD, CSCS, CISSN, EP-C

The science of carb metabolism, risks of chronic high-sugar fueling, and how to adjust your intake based on training, carb type, and biomarkers. A must-read for endurance athletes.

With Karl Meltzer

With the most 100-mile wins in history, Karl shares insights on racing, directing, music, golf—and why keeping it chill might be the ultimate endurance strategy.

By First Endurance

First Endurance has partnered with Kelly Benefits Cycling to help develop the next generation of elite cyclists. KBS is a top U.S. development program known for producing results—and future leaders.

By Matt Denis

Meet Matt Denis, First Endurance’s new copywriter—and a competitive cyclist who knows the grind firsthand. He’s been channeling pro-level insights into our content all year, and now he’s turning the spotlight on himself in this Q&A.

By First Endurance

EFS-PRO is based on athlete feedback, surveys, and testing. The science is complex—but at its core, it’s all about one thing: carbs.

With Alex Howes

Former WorldTour pro Alex Howes shares how he’s training for the grueling 200-mile Unbound gravel race, drawing on years of elite road and dirt racing experience.

By First Endurance

The new EFS and EFS-PRO High Carb formulas are engineered to deliver more fuel and more electrolytes with less bellyache than their predecessors (and, incidentally, than any other hydration mixes). But why have a standard and a PRO?

With Cynisca Cycling

Named after a Spartan princess, Cynisca Cycling brings fierce ambition to the pro circuit—racing hard, promoting equality, and shaping the future of women’s cycling.

With  Robert Britton and Andrew “Lespy” L’Esperance

Rob & Andrew tackled the grueling 800km 2025 Absa Cape Epic together for the first time. Through heat, fatigue, and tough terrain, smart prep and teamwork carried them to the finish—bringing back hard-earned lessons and shared pride.

By Holly Breck

First Endurance rider Holly Breck shares her breakthrough win at the notoriously tough Redlands Bicycle Classic. 

Coach and former XTERRA World Champion Josiah Middaugh teaches time-crunched athletes to train smart—targeted sessions, balanced disciplines, and non-negotiable recovery.

Hot Tubes Development Team has been a standout presence in junior elite cycling races across the U.S. since the early ’90s, known for producing national champions and future pros. They're also helping grow the sport in North America—powered by First Endurance.