November 13, 2017 – The Sufferfest, a comprehensive training app for cyclists and triathletes, today announced the release of its latest workout, Who Dares. Adding to their extensive library of 43 structured cycling workouts across nine categories, the new session features exclusive footage from the Union Cycliste International (UCI) Women’s World Tour.

Echoing the rise in popularity of women’s professional cycling, Who Dares features exclusively-licensed footage from some of the biggest races in UCI Women’s World Tour calendar, including Ghent – Wevelgem, de Ronde van Vlaanderen, and Strade Bianche – Eroica Pro. As with all workouts from The Sufferfest, Who Dares promises to keep athletes engaged with a compelling storyline and driving soundtrack designed to perfectly complement the pace changes.

Who Dares is a 54-minute base workout with three nine-and-a-half minute, sub-threshold intervals punctuated by three sprints: one at the beginning of the interval, one in the middle, and one at the end. The workout was created by Mac Cassin, Coach at APEX Coaching in Boulder, Colorado and one of the architects of The Sufferfest’s newly-released Four-Dimensional Power™ (4DP) training personalisation platform.

The Sufferfest: Who Dares from The Sufferfest on Vimeo.

“Across the 4DP metrics, Who Dares focuses on developing an athlete’s Anaerobic Capacity, Neuromuscular Power and Functional Threshold Power,” said Cassin. “Incorporating three sprint efforts into each sub-threshold interval floods your system with metabolites like lactate, which your body is then forced to clear while still working at a relatively high intensity. This helps improve your ability to actively recover, which is ideal for situations like races where you need to be able to follow repeated surges and attacks. Multiple cadence changes throughout the workout also serve to stimulate the nervous system, which is critical for improving form and efficiency.”

“The addition of Who Dares to our massive library of cycling, yoga and mental toughness sessions provides athletes with yet another invaluable tool to build speed and power,” said David McQuillen, CEO of The Sufferfest. “When done in the context of our new Four-Dimensional Power platform, the intensity of each interval is further optimised to match an athlete’s unique power profile, resulting in one of the most effective base workouts available.”

To experience Who Dares and the rest of The Sufferfest’s catalogue of structured workouts, download The Sufferfest Training System for iOS, Mac OS, and Windows or visit one of the 162 Licensed Sufferlandrian Embassies worldwide. For more information on The Sufferfest, please visit