Endurance Unlimited Cover Image For Molly Seidel And Cliff Pittman
By Host Dirk Friel
Molly Seidel and Cliff Pittman on the Shift from Running Marathons to Ultras

Editor's Picks

Image Of The Trainingpeaks Staff Visiting Team Cofidis In Spain 2026

Behind the Scenes at World Tour Training Camps

By Dirk Friel

Every year, TrainingPeaks meets with the world's top coaches and athletes to talk shop and new features. Here's a peek behind the scenes of 2026's excursion.

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Transform Your Training with Smarter Sleep: Insights with Dr. Charlotte Edelsten

By Host Dirk Friel

Host Dirk Friel is joined by sleep researcher and sleep coach Charlotte Edelsten, whose expertise is backed by over two decades of research on sleep and performance. Together, they dive deep into the science behind sleep for endurance athletes—addressing why sleep is a true foundation for training adaptations, injury prevention, and race-day performance.

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