In this post I highlight based on the opinion of Olympic coach Karim Abdel Wahab, some of the key differences and similarities between the 100m and 400m when it comes to sprinting technique. Studies have shown that the 400m runners whose technique is closest to 100m runners are the fastest. Topics covered include knee drive, turnover, ground contact time as well as where the foot lands in relationship to the bodies center of mass during sprinting.

Talking about a 400-meter sprinter and their technical models, a lot of coaches would ask: “Do I want my 400 sprinter to look exactly as how a 100-meter sprinter would look or a 60-meter sprinter would look?” In terms of efficiency and trying to be efficient and carry the energy around the track, it’s almost impossible for your 400 sprinter to look exactly like a 100-meter sprinter in terms of the knee drive, the turnover and all of that. The nervous system and the body energies are not going to handle going with that intensity for the whole 400.

Their technical model is not going to be the same. The knee drive is not going to be as high at the max velocity phase. It’s going to be a little bit lower for a 400 runner for efficiency purposes. But Dr. Ralph Mann, a great biomechanist, did some studies based on actual world-class 400 sprinters. One of the studies shows that the 400-meter sprinters that have their technical model and their mechanics closer to the 100-meter sprinters, they’re going to end up running faster. Let me give you a couple of examples:

• The ground contact time is a little bit longer in the 400 than the 100 meters. But the 400 runners that have a shorter ground contact (that the ground contact time is a little bit closer to the 100 meters) end up having better performances.
• And how about the foot landing in front of the center of mass? The closer the foot into the center of mass, the faster your 400 runners will be.

It’s hard to attain the same exact technical model as a 100-meter sprinter around the track as a 400 runner, but if you coach your 400-meter sprinters to become technically sound and be slightly closer to the 100-meter model, while being efficient and distributing the energy correctly around the track, you’re going to have the best performance possible.

Bibliographic references:

• Outperform. (2019). Sprinting Technique | 100m vs 400m [Video file]. YouTube. https://youtu.be/iPMYOsSptrc?si=IGrYiWdulDo4dgVl
• Mann, R., & Murphy, A. (2024). The Mechanics of Sprinting and Hurdling. CreateSpace Independent Publishing Platform.