4x8 minutes threshold

• Cycling
• 1hTime
• 88Stress
• 0.94Intensity
• 60Popularity

About this workout

The Seiler 4x8 protocol pushes your limits with four hard-hitting intervals at 107.7% FTP, ideal for developing your aerobic threshold and maximizing your VO2 max. Use this workout to sharpen your performance for weekly group rides or to tackle those challenging climbs with confidence.

Workout structure

• 5 min @ 54% (54w)
• 5 min @ 58% (58w)
• 4X
  • 8 min @ 108% (108w)
  • 3 min @ 65% (65w)
• 6 min @ 54% (54w)