Last Updated: May 5, 2026 Cycling training zones split effort into 7 levels based on power (% FTP) or heart rate (% threshold HR): Zone 1 (active recovery), Zone 2 (endurance), Zone 3 (tempo), Zone 4 (threshold), Zone 5 (VO2 max), Zone 6 (anaerobic), Zone 7 (neuromuscular). Below, we cover each zone’s purpose, prescribed durations, … Continue reading Cycling Training Zones Guide: Heart Rate and Power Zones Explained