The Team Oxygenaddict 20 week Ironman Training Plan, written by coach Rob Wilby, This plan follows the principles of 'reverse periodization' described by coach Rob in his TrainingPeaks webinar 'Reverse Periodization for Triathlon Performance', and is designed to lead on seamlessly from his winter training blocks. This plan incorporates an 8 week 'spring' build block, and then the 12 week 'race preparation' block. Further free resources to complement this plan including swim drill videos, run pace calculator and testing protocols can be found at http://www.oxygenaddict.com under 'free resources.'
This level 2 plan is aimed at intermediate athletes with a history of training approx 6-8 hours per week. Weekly volume increases from roughly 7 hours to 14 hours per week across the plan, depending on swim volume chosen.