Marathon Bonking and Hitting the Wall Prevention: 60g/hr Fueling & Gut Training

In distance running lore, it is famously declared that the marathon truly begins at kilometer 30. Countless runners cruising comfortably toward personal bests unexpectedly disintegrate between kilometers 30 and 35, succumbing to leaden limbs, cognitive clouding, and catastrophic deceleration—known as Hitting the Wall (Bonking).

Bonking is not a moral failing of willpower, but a physiological breakdown involving cellular glycogen depletion, hypoglycemia, and protective neurological down-regulation.

Section VII: Progressive 6-Week Gut Training Protocol

Progressive gut conditioning upregulates intestinal transporter expression, preventing GI distress under high racing intensities.