15x4 100%

• Cycling
• 1h 55mTime
• 128Stress
• 0.82Intensity
• 30Popularity

About this workout

This brutal 15x4 workout pushes your limits with two sets of 15 minutes at 100% FTP, making it a classic for defining your threshold power. It's perfect for elevating your performance in weekly group rides and time trials, ensuring you can sustain that hard pace when it counts.

Workout structure

• 20 min @ 55% (55w)
• 2X
  • 15 min @ 100% (100w)
  • 10 min @ 55% (55w)
• 15 min @ 100% (100w)
• 30 min @ 55% (55w)