Fitness
Zone 4 Cycling Threshold Band
Zone 4 cycling threshold band is riding at or near FTP—often roughly 91–105%—to raise sustainable hard power when recovery is planned around it.
Zone 4 cycling threshold band targets power at or just below functional threshold—often roughly 91–105% of FTP—where lactate production and clearance stay balanced for limited durations. Intervals here raise the power you can sustain for twenty to sixty minutes.
Sessions demand carbs, cooling, and recovery days afterward.
Common questions
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How long can you stay in zone 4?
Most riders manage eight to twenty minutes per rep before power fades; cumulative weekly time matters more than one heroic effort.
Related terms
Put Zone 4 Cycling Threshold Band into practice
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