I didn't watch it yet, but if he did, it's certainly not his fault unless he bribed the driver or organizers. It's the responsibility of the lead/camera cars (or bikes) to stay far enough in front and those vehicles certainly have enough power to do so. It's not the runner's job.
I watched most of the race. At times he was getting closer to the car, but in the 2nd half of the race the gap was too big to be getting any wind-draft effect. I don't think it played a role in this run. Kiplimo was on fire and the only thing he had to chase was the pace car.
I didn't watch it yet, but if he did, it's certainly not his fault unless he bribed the driver or organizers. It's the responsibility of the lead/camera cars (or bikes) to stay far enough in front and those vehicles certainly have enough power to do so. It's not the runner's job.
I agree, but there needs to be some limit which makes a time record ineligible.
Similar to how wind is not an athlete’s fault, but if you run the 100m with a tornado pushing you forward it won’t be record eligible.
I watched most of the race. At times he was getting closer to the car, but in the 2nd half of the race the gap was too big to be getting any wind-draft effect. I don't think it played a role in this run. Kiplimo was on fire and the only thing he had to chase was the pace car.
How do you know? At that pace there jas to be a drafting effect, even if the car is several meters ahead.
I watched most of the race. At times he was getting closer to the car, but in the 2nd half of the race the gap was too big to be getting any wind-draft effect. I don't think it played a role in this run. Kiplimo was on fire and the only thing he had to chase was the pace car.
How do you know? At that pace there jas to be a drafting effect, even if the car is several meters ahead.
Not necessarily. At a certain distance behind the car there will be more turbulence than is beneficial. At distances beyond that, you get no draft as well. So you have to be pretty close to the car to get any real boost. I too didn't watch the video, so cannot comment on this specific run.
How do you know? At that pace there jas to be a drafting effect, even if the car is several meters ahead.
Not necessarily. At a certain distance behind the car there will be more turbulence than is beneficial. At distances beyond that, you get no draft as well. So you have to be pretty close to the car to get any real boost. I too didn't watch the video, so cannot comment on this specific run.
He was pretty close. Also the lead car had a clock, and a person on the roof. Plenty of helpful windbreak for Kiplemo.
It was a great run but he had some aero advantage there.
IMHO, to get some benefit one should be much closer to the car than Kiplimo was. In the cycling sport there was a kind of race on track when a motorbike leads a cyclist (don't know if it is still on). And the latter is not more that 1.5 m behind for speeds about 60+ km/h. If this close contact is lost, he immediately "hits a wall". And for speeds like 20+ km/h this distance should be less.
This could be easily modelled/simulated numerically nowadays. Are there any experts in aerodynamics here outfitted with appropriate software toolkits?
I watched most of the race. At times he was getting closer to the car, but in the 2nd half of the race the gap was too big to be getting any wind-draft effect. I don't think it played a role in this run. Kiplimo was on fire and the only thing he had to chase was the pace car.
I disagree. He was less than 2 seconds behind the lead car during most of the second half.
This post was edited 4 minutes after it was posted.
IMHO, to get some benefit one should be much closer to the car than Kiplimo was. In the cycling sport there was a kind of race on track when a motorbike leads a cyclist (don't know if it is still on). And the latter is not more that 1.5 m behind for speeds about 60+ km/h. If this close contact is lost, he immediately "hits a wall". And for speeds like 20+ km/h this distance should be less.
This could be easily modelled/simulated numerically nowadays. Are there any experts in aerodynamics here outfitted with appropriate software toolkits?
A motorbike is not wide and high. Of course you have to be close to benefit. As any cyclist knows who has ever drafted by riding behind another cyclist.
Things are different for cars, especially when they have a clock on top. Why do you think Kipchoges sub2 featured a car ?
IMHO, to get some benefit one should be much closer to the car than Kiplimo was. In the cycling sport there was a kind of race on track when a motorbike leads a cyclist (don't know if it is still on). And the latter is not more that 1.5 m behind for speeds about 60+ km/h. If this close contact is lost, he immediately "hits a wall". And for speeds like 20+ km/h this distance should be less.
This could be easily modelled/simulated numerically nowadays. Are there any experts in aerodynamics here outfitted with appropriate software toolkits?
Cyclists immediately hit the wall if contact is lost not because they suddenly get no draft, but because the draft effect is *so large* right behind the lead motorbike that being even a couple of meters off the back makes a significant difference.
Now, running has much reduced speeds and the distance between Kiplimo and the lead car was larger than a couple of meters. Still, count me among those who think he may have benefited by 2-3 seconds per mile.
There are marshalls all over the race course at international events like this whose sole purpose is to disqualify athletes that breach any rules. If he had broken any rules he would have been disqualified before the race even ended, or at least the moment he finished.