This is a plan built off the design outlined in Billal et al 2004 using progressively more intervals at threshold over a 5 week training period to increase time to exhaustion in established endurance athletes. This is completed near FTP and requires an accurate estimate of functional threshold power or maximal lactate steady state power. If you do not have a preferred FTP protocol, you may email me and I can add one to your plan.

This plan is written to work best with power feedback or a smart trainer. It is listed as for intermediate athletes but will likely show robust response with beginners as well as moderate response with advanced athletes. For questions or comments, please email me.