12-Week Base + Threshold Cycling Plan | Science-Based, VO2max Focused Final Block

This structured 12-week training plan is designed for cyclists looking to build a strong aerobic base, improve threshold power, and prepare for high-intensity race efforts. Grounded in scientific principles, the plan follows a progressive overload model with three microcycles, each consisting of 3 weeks of build and 1 recovery week.

🔬 Evidence-Based Periodization

The first 8 weeks emphasize low-intensity endurance with 2 key Sweet Spot to Threshold sessions per week, building a robust aerobic engine while minimizing fatigue.
The final 4 weeks shift to a high-intensity focus, inspired by the research of Rønnestad et al., incorporating a VO2max overload week where 4 out of 5 sessions target VO2max intensities — designed to significantly boost aerobic capacity.

📈 Plan Highlights

- Designed for serious amateur cyclists and competitive athletes
- Science-backed structure: 3:1 work-to-recovery ratio
- Gradual progression in volume and intensity
- Final block with VO2max overload to peak aerobic performance
- Compatible with power, heart rate, or perceived exertion (RPE)
- Includes clear daily instructions and weekly goals

This plan is ideal for the off-season, early base period, or as a structured lead-in to more race-specific training. Whether you're preparing for road races, gran fondos, or simply aiming to push your FTP higher, this plan lays the foundation for long-term performance gains.