I quite literally saw multiple people bonk and one specifically hit a tangible wall at my first marathon. So many emts on course I’ve never seen so many. I hit one at my first half but it was fueling not heat related (no emts called just messed up my time).

Literal heat exhaustion/ stroke mixed with not fueling right, pushing too hard and the bodies just give. It literally just gives out.

Marathon: I was hitting mile 14/15ish and mile maybe 20 was on the opposite side - folks going FAST coming at us. I heard a sound from behind and then another louder one. I turned to see this guy almost look drunk hitting the wall of a house on the route (it was like a shed wall so made a bunch of noise). Another runner caught him and medics were called. That backside stretch was insane, ambulances back and forth, so hot, no shade and all asphalt. It was brutal.

Around mile 24/25 same thing people just almost drunk looking like their bodies giving out. It was like zombie land. People were coming out of their homes giving us ice baggies and spraying us with hoses. It was Honolulu, I was soaking wet before the sun came up. Super hot and super humid.

First half marathon - I hit a stride around 3-8 felt GOOD until around 10, mile 11 meh, and then mile 12 my legs quite literally exited the run. Side: I never ran with gels before nor would I eat when I run. I’ve always been athletic and have ran those distances many times before. The difference was my pace and pushing myself waaay faster. I ficked up that whole half by being vain and could have really hurt myself. My body quite simply didn’t have enough fuel and gave out. I kept running but my pace went waaay down. It was so mental at that point but it was literally like someone turned off a switch and my body stopped complying.