MrGambinus wrote:
2:20-2:25 range seems plausible.
I do most of my training with a professional triathlete. His Long Distance PB is 8:20hours including a 2:53 run off the bike. In the Hawaii World Champs 2015 he ran 3:02 and his 10k PB is 35:11.
I would say 2:30-35 is his best shot at a flat marathon for speed reasons so a guy like Lange can be a little faster but not that much.
You have to consider that being a good biker and swimmer takes its toll. Yes, you have awesome endurance and resistance BUT also some more muscle in the upper body, some bigger legs and everything feels a little stiffer which costs you a lot of efficiency. You simply dont have a bouncy kenyan or galen ruppish stride when doing hard bike rides as well. This eventually sums up and costs you a good portion of your best marathon potential time.
You just described somebody who isnt actually a professional triathlete. He may get a bit of sponsorship, free entries, etc because there isnt much depth in triathlon (but definite talent at the very top), but that doesnt make him really relavent to somebody to is running 22 minutes faster than him at the end of a triathlon.