Kris Stallenberg 120-min Z2 (Endurance) Easy #10 A classic endurance ride with a strong emphasis on technique and form. The entire 100-minute main block is at a steady zone Z2 (Endurance) intensity, as per the Coggan Power Zones. Throughout the ride, text prompts will remind you to check in with your body: posture, breathing, and pedal stroke. The goal is to build aerobic fitness while reinforcing good habits that improve efficiency and comfort on the bike. bike