I started the race with a couple friends who were going for a 5:30 marathon. I was originally planning for a 4:30 first marathon. We crossed the starting line at 8:20. I ran with them for the first mile and then began picking my way through the crowd trying to get to my pace.
I reached the first aid station at ~8:40 and slowed to a walk looking for water or gatorade. The volunteers were shouting that they had no water or gatorade and to go to the next aid station. I would estimate there were 10,000 people behind me at that point.
When I arrived at the second aid station at mile 3.3 at ~8:53 I came to a complete stop and swarmed with dozens of other people the last volunteer hold a 5 gallon container of water. I got one glass of water. I assume that everyone after me got no water. Again at least 10,000 people behind me, if not more. I had picked my way up to the 4:45 pace crowd.
The next aid station was at mile 5.8. Now I'm estimating that 10,000 runners were provided with no water. Assuming an average pace of the runner behind of near 5:30 that equates to (with time to cross the start line) ~ 1:40 on the course with no water provided. That is why I saw dozens of runners swarming the public fountain in Lincoln park to drink the water.
At mile 5.8 was the third aid station, finally there was water and gatorade. There were distribution problems (ie too many runners desperate for water, too few volunteers) but they had water and gatorade. This was the case for the next three aid stations. However, I don't handle the heat very well and I was already experiencing the shivers of heat stress. So I slowed down.
I reached the 5.8 station at ~9:18; the 8.2 station ~9:45; the 10.5 station at ~10:15; the 11.9 station at ~10:38. At the halfway point I was so far behind my time goal and it was getting hotter so I walk/jogged most of the next 5 miles.
The next aid station was 13.7. I reached it at ~11:01. It was out of water and gatorade. The next aid station was at 15.6. I reached it at ~11:28. They were out of water but were resourceful and were using a business to fill the gatorade 20 gallon jugs with tap water. They were out of cups. I had to dig a cup out of the gutter and use it to drink the water. It was sometime between mile 16 and 17 that the police started to inform us that the race had been cancelled. They kept on saying that buses would come and take us back to Grant Park but they never materialized. The next aid station was at 17.9. I reached it at ~12:08. It had no water, but it had gatorade concentrate. I refused to drink it because I couldn't remember what the consequences would be. Better to be safe than sorry. The next aid station was at 19.2. I reached it at ~12:30. The rerouted me off the course at mile 20.2.
Now that's not to say I only got one cup of water after mile 13.1. The fantastic residents of the southside of Chicago came out in force and are the main reason there weren't dozens dead on the course. Also the drone of sirens was constant from the halfway point on.
That's the story of my marathon. For documentary purposes. Bib number 43707. It wasn't just ill prepared runners caught up in this. I was prepared. I had trained for eight months. I ran a half marathon in 1:56, five weeks before the marathon. But if you started in the latter half of the pack you were put in serious harm by not being able to get water until the third station. For slow runners that might have been nearly two hours after the gun went off. How can that not be negligence?