There Is No Carb Number. The UCI’s Own Data Ranges From 41 to 106 Grams an Hour.
The "90 to 120 grams of carbohydrate per hour" rule that dominates cycling nutrition advice comes from the top of a Grand Tour range, not the middle of the peloton. The UCI's own data spans 41 to 106 grams per hour across professional road cycling, and that spread is the point: there is no single carb number.

