When do Kipchoge’s performances become too incredible and suspicious?

Yes. In Professional cycling in the 90s EPO was rife. I was in a quandary about whether to write about it or not. I read Paul Kimmage's book, but it didn't tell the full story, just the pessimistic side. I actually raced against him in 1983, and I saw his demeanor.

The answer was to learn more. He didn't do that. I did.

One week ago Alexander Sorokin broke WR of 24 hour running. He is 41.

It's not hard to remember because you're doing the same thing constantly, ignoring common sense. I just remember the year in which I realized you weren't interested.

My basic point is that our Metabolic rates decline gradually from the time we stop growing. This is basic Biology. There is no drug or training method to prevent this decline.

Kipchoge's calorie burning capacity is declining as he ages, just like everyone else, but 38 isn't old for a marathon runner.

You really need to go to school, Jon.

journals.physiology.org

Testing for recombinant human erythropoietin in urine: problems associated with current anti-doping testing | Journal of Applied Physiology

Background: the main action of recombinant human erythropoietin (rHuEpo) is to increase the oxygen carrying capacity of the blood. To prevent a possible misuse of rHuEpo, this is tested in urine samples collected from athlete...

Link:journals.physiology.org/doi/full/10.11...

A quick summarization, EPO testing easy to beat.

Yes, and it's not just theory. Several articles show that some athletes benefit from blood doping more than others. Experts typically either give a maximum (Schumacher: up to 1 minute over 10,000 m) or a range (Parisotto/Ashenden: 15 - 30 seconds over 5000 m).

BTW, let's not forget that Sang already had one of his athletes banned for blood doping.

On the other hand, Kipchoge didn't exactly pulverize the WR, especially when considering that the WR was already 2:02:57 eight years ago:

2022: 2:01:09 (30 s, 7.5 s/year) <- advanced super shoes
2018: 2:01:39 (78 s, 19.5 s/year) <- super shoes
2014: 2:02:57 (26 s, 26 s/year) <- bigger jump per year, no super shoes
2013: 2:03:23 (15 s, 7.5 s/year)
2011: 2:03:38 (21 s, 7 s/year)
2008: 2:03:59 (27 s, 27 s/year) <- bigger jump per year, no super shoes
2007: 2:04:26 (29 s, 7.5 s/year)
2003: 2:04:55 (43 s, 43 s/year) <- biggest jump per year, no super shoes
2002: 2:05:38
Also, Kipchoge is now 32 seconds ahead of the second fastest ever. Back in
2008, Haile was 56 seconds faster than the second fastest ever. So Kipchoge’s
current lead is not exactly unprecedented.

Since when have you been interested in Bioenergetics.

And why do you constantly make false accusations?

You really need to look up the word Entropy.

OP: quit dancing around the subject. If Kipchoge was white, would this still be the question?

Secondly, I don’t understand how many people, especially those on the Right, just can’t accept it when someone not of their tribe is far better than anyone else at activity X.

There’s only a small handful of runners who are capable of pushing Kipchoge. He’s just that good. They all have access to all the same shoes, gear, training, etc. those are all red herrings.

He has the physical, mental and emotional commitment to running the marathon. He believes that is his purpose in this life. Hard to match that.

Why do always go for personal attacks as soon as you run out of arguments?

And where did you see a false accusation here?

It’s intellectually lazy and reductive to assume my concern is about Kipchoge’s skin color. I have a similar concern about Keira D'Amato, but she at least displayed some mortality in Berlin.

Your comments miss the crucial point about age being a huge factor in my suspicion. I had no issue with Kipchoge being the world’s best marathoner back in 2016. But smashing records all these years later at his age? It is absolutely reasonable to be suspicious. Political leanings have nothing to do with this.

Nobody denies he has total commitment to the marathon. If anything, it’s possible his extreme commitment would lead him to do whatever it takes to fight off Father Time. Moreover, he’s not merely maintaining his level of greatness as he approaches 40. He’s getting better! That is valid reason for suspicion.

So tell me, as someone who seems certain that Kipchoge is clean, what performance at what age would cause you to start doubting?

False premise, Jonny. Besides you can barely spell some basic words. Don't try to understand medium level ones.

You make up accusations of blood manipulation based on lack of knowledge of blood volume. You've been doing it for years.

I haven't run out of arguments, it's the same thing with you constantly. It's a game to you. You're shameless.

Entropy. Look it up.

I'M still doing the same thing here? Ignoring common sense? So you define common sense as agreeing with you when you make the same assertions and support them with nothing more than a few vague comments and insults for people who disagree with you? Again, you shoe NOTHING in your posts that's at all persuasive.

"... SHOW nothing..."

There you go again, ducking the issue.

I was wasting my time with you wasn't I?

You aren't interested in his actual physiology only in some imaginary scenario.

OP: quit dancing around the subject. If Kipchoge was white, would this still be the question?

Seriously? When the Robertsons moved to Kenya to train and made massive improvements plenty of people suggested there was PED help going on. I've seen questions about D'Amato. Send a US runner to train full time in Kenya and have him run under 2:03 and see if there are questions.