Kris Stallenberg 120-min Z2 (Endurance) Easy #01 This workout is a foundational endurance ride designed to improve aerobic efficiency and build your base fitness. The main set consists of a long, uninterrupted block in zone Z2 (Endurance), consistent with Coggan Power Zones Level 2. The goal is to maintain a steady, conversational pace, focusing on smooth pedaling and consistent power output. This session helps enhance fat utilization and builds muscular endurance for longer efforts. bike