A fixed Ironman plan assumes you’ll do every session it lists, in order, for 20 weeks or more. You won’t. ownathlete is an AI coach that reads your training every day and rebuilds the plan each time life gets in the way, which for most age-groupers is every week.
How much training it takes
Triathlete magazine puts a 70.3 at about 8.5 to 11 hours in an average week, 11 to 14 at the peak, and a full distance at 10.5 to 14 hours, 14.5 to 18.5 at the peak. Most plans run 20 to 36 weeks.
More isn’t automatically faster. In a study of 99 athletes at Ironman Brazil 2019, finish times didn’t differ between those training up to 14 hours a week, 15 to 20, or more than 20. What you can repeat and recover from counts for more than your biggest week.
Where fixed plans break
- You’re ill for 3 days in week 14. The plan carries on as if you weren’t.
- Work takes Saturday’s long ride. You either cram it into Sunday or lose it, and nobody tells you which is right.
- Your mornings say you’re not recovering. A PDF can’t read them.
- You have 9 hours, not 12. The plan was written for someone else’s week.
A week that goes wrong, rebuilt
Say it’s week 14 of 20. A cold arrives on Tuesday, and on Wednesday your resting heart rate is 6 beats above your normal. Your coach takes Tuesday’s and Wednesday’s sessions off, decides whether Saturday’s long ride stays, shrinks or moves to Sunday, and rewrites the next week so you’re not doing 2 weeks of work in one. You see what was asked, struck through, beside what replaced it, and a line on why.
The same happens for good news. 4 strong weeks in a row and steady mornings? The next block can ask for more.
HRV, honestly
Training by HRV isn’t magic. A 2021 review of the studies found that HRV-guided plans improved HRV itself, while the gains in fitness and race performance over fixed plans were small; fewer athletes responded badly, though. So your coach reads HRV together with your sleep, your training load and what you say, never as a traffic light.
Why ownathlete for your Ironman
- 3 sports, one week. Swim, bike and run in one plan, with strength where it helps, at least 21 days ahead, every day written out.
- Built around your hours. Say you only have weekday mornings before 7, or 10 hours a week, and the plan fits it.
- On your watch. Workouts go to your Garmin.
- Race day, planned. Add your race with its course file and your coach settles the pacing climb by climb.
Coming from a fixed plan? Bring your history: your past sessions are read on the first day, so your first week already fits the athlete you are now. Try ownathlete free for 14 days.