Originally Posted by
ZHVelo
This is really what I wanted to say. You may not get to 120g/hour, but why not try and just see to where you get.
And agree, I mean if it were impossible even at rest, you couldn't smash down any large carb-heavy meal without getting problems (and maybe some people do get problems). One needs to figure out how one can keep the intake up with increasing intensity.
Yeah, it's very individual but also trainable. You just have to find the right fuel mix (again very individual) and experiment a little. On a long hard event ride I usually start with a bar (40g) plus 1 bottle (20g) in the first hour, same again hour 2 and then in the 3rd hour start replacing bars with gels at around 2 per hour (22g each). I also try to keep chipping away at a bar or two more if it's a 5+ hour ride. As I say, I usually end up averaging around 60g of carbs per hour over 5+ hours.