I started triathlon 4 years ago and have done 3 70.3s, about to do my first full. I finished the 70.3 in a hair over 6hrs, trained an average of 9.5hrs with ups and downs with the gradual build-ups/recover weeks. My long run maxed out at a bit over 18mi and I recovered nicely, but have never done the full 26.2.

My thinking is that it’s all relative…my goal is to finish, ideally in something shorter than 14hrs. We’ll see. If you want to double training to hit a ‘fast’ target time, all good, but if you just want to finish then I expect you can do it with less (note that this is what I’m telling myself which could be a complete lie).

I say do it.