Is Alberto Juantorena the only man in in history to have broken 45.00 for 400 and 1:43.00 800?

Juantorena most certainly doped w advisors from eastern block...

The only guy who 'could' actually do it is Rudisha.

even if he typo-ed/misspoke or is just flat-out mistaken...it's still an interesting question.

just substitute 1:44 for 1:43.

"Of course, we all know that Bolt can run sub 44 and that a 1:43 is just back to back 51.5. How slow does 51.5 feel to him or any other top sprinter? Clearly, any sub 44 guy can run sub 1:43. They just don't want to. Or so says the average letsrun poster."

Sarcastic, yes, but one of my coaches "when I were just a lad" always said that 400/800 was a natural combination of events, more so than 800/1500. He pointed out that in the 1950s lots of top athletes combined the two and that it was the emphasis on high mileage for 800 runners that came in with Lydiard and Snell that frightened off the 400/800 type. Someone who can run 46 seconds from blocks should be pretty comfortable going through 400 in 50 seconds and, if they have built up strength and endurance could come home no slower than a 53. This does not mean necessarily doing loads of mileage, which might take the edge off their 400 speed, but the sort of things that Juantorena was doing; 1000 reps, fartleks etc.

For a 800/1500 type going through in 50 is so much more like hard work.

The title of this thread is much akin to "Paris in the the spring"

No, but Amos and Korir are now.

After this past year, I’m really curious as to what Brazier could run for an open 4.

Not too fast. My bet: 46.33 to 46.67 400m.

This is the most grounded answer I’ve heard.

I personally think he’s in the upper 45s, but that seems slow considering he’s a primarily a 4/8 runner.

Rotich the Rotich wrote:

This is the most grounded answer I’ve heard.

I personally think he’s in the upper 45s, but that seems slow considering he’s a primarily a 4/8 runner.

Sorry, I’ll clarify.

45.9 seems slow considering how he compares to other 4/8 runners.

44.2/1:42.0 Korir

44.9/1:41.8 Amos

45.2/1:44.7 Dixon

45.5/1:40.9 Rudisha

45.4/1:43.2 Saruni

Having wrote all of this, 45 low or faster doesn’t seem all that insane for Brazier.

I mean it wrote:

Time to stop drinking, rojo.

rojo sez: me aint not gots two bee drunk too makes no stinkin faktewal errurs. it bee a simpul mistake. me bee smart as ebbidensed by me goin two princtun kollije. even tho my pappy dun did pay them their big ol bribes sows that me an wejo kuld gets into kollij, us still dun did granulate. an us dun did granulate without ebber reedin no stinkin books nor lernin nuthin neether. now that bee smart.

Rotich the Rotich wrote:

[quote]Rotich the Rotich wrote:

This is the most grounded answer I’ve heard.

I personally think he’s in the upper 45s, but that seems slow considering he’s a primarily a 4/8 runner.[/quote]

Sorry, I’ll clarify.

45.9 seems slow considering how he compares to other 4/8 runners.

44.2/1:42.0 Korir

44.9/1:41.8 Amos

45.2/1:44.7 Dixon

45.5/1:40.9 Rudisha

45.4/1:43.2 Saruni

Having wrote all of this, 45 low or faster doesn’t seem all that insane for Brazier.

While in high school, Brazier was a 400m to 5K XC man. While in high school, Brazier was solid in all events from 400m to 5K XC. While in college at Texas A&M, Brazier was a solid 400m/800m athlete. At Texas A&M, Brazier was fast enough at 400m to be on Texas A&M's 4x400m relay. As a world class athlete, Brazier is not a 45.xx 400m. man. As a world class athlete, Brazier is an 800m specialist. There is no evidence Brazier is capable of sub-46 400m. Show us a sub-21.25 F.A.T. 200m. Show us a sub-20.75 200m relay leg. Brazier is big and strong like many men faster than Brazier but that does not mean Brazier is a sub-46 400m man. Because other 800m runners you have listed are sub-46 400m men does not make Brazier a sub-46 400m man.

there were some posts about this in different threads about the 800m. one poster - sorry, i can't find it right now - pointed out that very likely a few top performers, i.e. sub 1:43, were capable of a sub 45 as well, though they have not an official result. i know, i should stop now because of this but it is fair enough to keep in mind that 800m specialists are not focused on getting ready for 400m races at the well known events or races. in most cases it's a season opener or something else without priority. and if they run, it's very often not an optimal race (weather, motivation, over-pacing at the beginning ...).

kipketer is an example for someone who was likely a sub 45 guy, gray probably as well (his opener lap was always a bummer), cruz, coe, amos come to my mind.

afnog wrote:

Clownsho wrote:

When did Juantorena break 1:43?

Indeed. So I guess the answer to the question in the thread title is 'no'.

OP goes home DEVASTATED!

JuantoJuiced wrote:

Juantorena most certainly doped w advisors from eastern block...

If that is true, why does this little mention anywhere? I never hear about it.

Other eastern block athletes, like Cierpinski, get hammered relentlessly for the same.

El Caballo II wrote:

Rojo, here is a thread I started on on pretty much the same exact topic.

http://www.letsrun.com/forum/flat_read.php?thread=7926979

The consensus answer is that Mark Everrett 44.59/ 1:43.20 and Alberto Juantorena 44.26/ 1:43.44 are the only two sub 1:44, sub 45 guys in history.

There are no sub 1:43, sub 45 guys.

Jim Ryun coulda woulda shoulda

How about sub 1:42 and sub 45?

https://www.worldathletics.org/athletes/botswana/nijel-amos-256997

rojo must be either still asleep or still drunk.

Dixon split 44.24 on the 4 x 4 indoors last year, fastest indoor split ever. He has also split 44 low multiple times, maybe sub 44. His open 400 time isn't indicative of his speed. If he ran it later in the season it would be much faster.

800fan wrote:

Dixon split 44.24 on the 4 x 4 indoors last year, fastest indoor split ever. He has also split 44 low multiple times, maybe sub 44. His open 400 time isn't indicative of his speed. If he ran it later in the season it would be much faster.

As you may know, the only honest relay split is first relay leg. Based on my experiences, racing 200m or 400m on relays, besides first leg of relay one is given a turbo performance boost racing 2nd, 3rd or anchor. F.A.T. sprint times are honest performances.