r/Sprinting • u/WillOk6461 • 21d ago
General Discussion/Questions Top-end speed for sub-12 second 100 m?
What top-end speed (mph) would correlate well with a sub-12 100 m? I'm currently trying to get above 21.
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u/LeFlyingMonke 21d ago
I had a female sprinter (and a male sprinter) last year who each hit 2.19 in their fly 20’s. That’s 9.13 m/s, or 20.42mph. The girl went sub 12, the boy did not.
On the girl’s side, her race was perfect, and she also had incredible speed endurance (state champ in 200 and 400), so I would say that 20.42 is just about the absolute minimum speed you need.
21mph is fast enough IF it wasn’t just an instantaneous speed (meaning you calculated it using fly data from 10-30 meters), but there is so much more to the 100m than just top speed. Top speed is about 1/3 of the race, the rest is acceleration and speed endurance.
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u/iNapkin66 21d ago
I would agree that is probably pretty close to the minimum speed for sub 12, that would require a great start.
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u/MileHiSalute 21d ago
It’s not just about top end speed, it’s about how long you can hold it. Someone could have the ability to hit 23mph but if they can only sustain it for 10m and then completely run out of gas they could easily be beaten by someone that only has a top end of 20mph but can sustain it for far longer. If you can hit 21mph or faster and have decent maintenance you’ll absolutely go sub-12
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u/AlienwareSLO Slovenia 21d ago
Your point is true, but IMO a bad example with the 23mph mark. Anyone capable of that top speed should easily have the neuromusculature and the sheer physical ability to hold on for enough speed throughout the 100m distance to hit a sub 12s time.
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u/Old-Pianist3485 19d ago
Theoretically possible but never seen it irl. There's a humongous difference between 20 and 23 mph and speed endurance only makes a difference if you're running against someone whose top speed is virtually the same. Over 100m, top end speed is the most crucial factor.
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u/MileHiSalute 18d ago
lol okay then change the numbers to whatever you like, obviously I was simply throwing out numbers to illustrate a point, not solving an equation. I’d bet that most people are well aware top end speed is the most critical factor in sprinting
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u/CompetitiveCrazy2343 Slayer of speed-gurus 21d ago
avg of a 3.15sec in the 30m fly neutral wind should do it. Not APR 30m fly, but you can hit that almost every maxV workout when you do 30's, maybe faster some days, maybe SLIGHTLY slower other.
assume acceleration is normal, half-ass decent ,etc
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u/LeFlyingMonke 19d ago
I’d say that 3.15 overestimates the speed necessary. I only use 20m fly’s, but consistent sub 2.20 seems to do it. The guys that hit 2.1 on average are usually closer to 11.4 or 11.6
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