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Can a 11.3 100m Sprinter run a 43.18 400m WR? In Theory, YES

You are here: Home / Track & Field / Can a 11.3 100m Sprinter run a 43.18 400m WR? In Theory, YES
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January 27, 2015 by Jimson Lee Leave a Comment

When a young laddie shows up at the track with a PB of 11.3, I tell him, “Son, if you ran your 100m, kept going for 400m without slowing down, you would break Michael Johnson’s World Record!”

Yes, it’s true.  Unlikely, but the math adds up.

So how can a guy whose PB is 11.54 sec (or 11.3 hand time) for the 100 meters run a world record in the 400m of 43.18? In theory, it’s possible.

11.54 is about 10.54 (fly time) if you take in account 1 sec for acceleration out of the blocks.  (Read my Valery Borzov article) This translates to an average speed of 9.48m/s, or about 42.18 sec for 400m.  Add 1 sec for acceleration, and voila, you have 43.18!

But that is pure fantasy.

Everyone slows down after reaching maximum velocity, approximately 7 seconds or 60 meters in men for a 100m, 200m, and 400m. The rest is speed endurance.  In fact, the 400m is one long deceleration after reaching top speed at 60m.

Tellez 5 phases of the 100m sprint outlines how 12% of the race is “Lessened Degree of Deceleration”.

John Smith of HSI always said his goal was to eliminate that deceleration phase.. which would mean extending the acceleration and maxV from 60m to 100.  We are already seeing Usain Bolt and Tyson Gay reaching maxV at 70m.  When can we see this in a 100m?  Or 400m?

You’ve heard the expression: In a 100m race, the person who slows down the least wins the race. It may appear the sprinter is speeding up, but in reality, the others are slowing down.  Just watch Carl Lewis in the 1984 100m Olympic final.  It looks like he is speeding up in the last 10m, but in fact, everyone is slowing down.

See also  Lee Evans and Ato Boldon, The Road to Sydney

Calculating Potential and Slow Down

I love numbers, math, conversions, fantasy sports, and being the armchair Quarterback. Here are accepted conversion factors to calculate potential for the 200m and 400m:

  • 100m to 200m: double 100m time +/- 0.2 seconds
  • 200m to 400m: double 200m time +3.5 to 4.0 seconds

Most seasoned 200m sprinters slow down about 0.5 sec between the first and second 100m when you take in account 1 sec for acceleration out of the blocks.

1996 Olympic Games. Atlanta, USA. Athletics. Men's 200 Metres Heat. Namibia's eventual silver medal winner Frankie Fredericks

Take for example Namibia’s Frankie Frederick’s 100m PB of 9.86. This translates to a potential of 19.52 – 19.92 and his PB for 200m is 19.68. Even if he ran the first 100m in 10.1, well within his means, his second 100 with a running start would be 9.58. Thus:

19.68 = (1 + 9.1) + 9.58 = a slowdown of 0.48

By the way, you can’t take a 100m time and double it to determine the worlds fastest man compared to a 200m sprinter, because the 2nd 100m has a running start. Memories if the 1997 Skydome match race between Donovan Bailey/Michael Johnson come to mind.

The Perfect Race with No Slow Down

mj-200m-og.jpgSpeaking of Michael, the greatest example of someone running the perfect race with minimal slowdown is his 200m WR of 19.32 seconds in the 1996 Atlanta Olympics.

His 100/200m splits was recorded at 10.12/19.32. If you factor in 1 sec for acceleration out of the blocks, we get:

19.32 = (1 + 9.12) + 9.20 = a slowdown of 0.08 between his first and second 100m.

Absolutely phenomenon! That race still gives me the chills when I see it.

See also  Usain Bolt, Tyson Gay and the Fastest 10 meter Split Recorded

Since his PB for the 100m is 10.09, I truly believe MJ ran within his human potential limit for a 200m. I shiver and wonder if he didn’t hurt his hamstring in that 200m, what would he have run in Zurich for the 400m a few weeks later? 19.32 doubled plus 3.5 seconds equals…

Yes, a 42 point… one can only dream.

Category iconTrack & Field

About Jimson Lee

I am a Masters Athlete and Coach currently based in London UK. My other projects include the Bud Winter Foundation, writer for the IAAF New Studies in Athletics Journal (NSA) and a member of the Track & Field Writers of America.

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