✶Explainer
What the INEOS 1:59 Challenge Actually Was
Eliud Kipchoge ran 42.2km in under two hours in a Vienna park, but it does not count as an official world record. It was an exhibition race, reportedly with a 15 million pound budget, engineered to make one man as fast as possible. Every optimisable variable was controlled, which is exactly why it became controversial.
- First human to run a marathon distance faster than two hours
- Not an official record because the conditions break IAAF rules
- Reported 15 million pound budget for a single-runner exhibition
- An electric car set exact two-hour pace and shone lasers on the road
- 41 world-class pacemakers rotated to shield him from drag
“a human being ran less than or faster than two hours for 42.2 kilometers”
“every possible thing anyone could imagine to make him faster was done”
#running#marathon#kipchoge#ineos
✶Explainer
How a Human Builds Sub-2 Marathon Physiology
Hutchinson argues the first requirement is genetic: you have to be born to run that fast. On top of that, Kipchoge grew up active at altitude in Kenya's Rift Valley, accumulated huge childhood mileage, and now runs roughly 140 miles a week. The result is decades in the making, not a science shortcut.
- Genetics come first: 'pick your parents correctly'
- Grew up running back and forth to school at altitude
- Accumulated more childhood training than many serious university runners
- Ran roughly 140 miles (over 200km) a week before the attempt
- He is still the only human on Earth who could have done it
“the first really important task is to pick your parents correctly”
“there's still only one human in the world who could have done this”
#running#genetics#training#endurance
✶Explainer
Why Long, Skinny Legs Make You a Faster Runner
Decades of experiments strapping small weights to a runner's foot, shin or hip show the further a weight sits from your body's centre, the more it costs. A little extra weight on the feet meaningfully worsens efficiency. So long, skinny, low-calf legs act as light levers that propel you forward without a weight penalty — a common trait where Kipchoge grew up.
- Weight far from the body's centre costs disproportionately more energy
- Even a few ounces on the foot changes running efficiency
- Long skinny legs with minimal calf muscle are ideal levers
- This body type is characteristic of Kipchoge's home region
- Explains why shoe weight matters so much to elites
“the farther away from the center of your body a weight is, the harder it is”
#biomechanics#running-economy#efficiency
✶Explainer
Why Two Pacemakers Ran Behind Kipchoge
The 41 pacers rotated in teams of seven — five in front, two behind. Wind-tunnel and computational fluid-dynamics tests showed the trailing pair matters: like being mid-peloton rather than at the back, runners behind keep the airflow smooth and push turbulence back beyond the last pacer, reducing drag on Kipchoge.
- Pacers rotated in teams of seven, five ahead and two behind
- Trailing pacers smooth the airflow around the runner
- Same principle as riding mid-peloton versus at the rear
- Turbulence gets pushed behind the last pacemaker
- Validated with wind-tunnel and CFD simulations
“It's faster to be in the middle of the Peloton than at the back of the Peloton”
#aerodynamics#drafting#pacing
✶Explainer
The Legal Downhill Start That Saved 10 Seconds
Before the loop, runners went about 500 metres down a bridge, descending 13-14 metres and saving roughly 10 seconds. It is not cheating: IAAF road-record rules permit a net descent up to a 1-in-1000 ratio, meaning up to about 42 metres over the marathon. Organisers used only a third of the allowable drop.
- A ~500m bridge descent of 13-14m opened the race
- Estimated to save around 10 seconds of 'free time'
- IAAF rules allow up to a 1-in-1000 descent ratio
- That permits roughly 42m of net drop over the distance
- They used only about a third of the allowance
“you're allowed to have a one in one thousand ratio descent”
#rules#course-design#iaaf
✶Explainer
Just How Fast Kipchoge Was Actually Moving
Kipchoge held roughly 4:34 per mile, about 2:49 per kilometre, or near 17 seconds per 100 metres — over 13 miles an hour sustained for the full distance. Hutchinson notes most people could not sprint that pace for even 10 seconds, and his smooth form disguises the speed. Recreational runners darting alongside the barricades lasted about 15 seconds before dropping off.
- Roughly 4:34 per mile, 2:49 per km pace
- Around 17 seconds per 100 metres, over 13 mph sustained
- Most people cannot sprint that fast for 10 seconds
- His smooth, gliding form hides how fast he is going
- Fit spectators running alongside lasted about 15 seconds
“he was doing 434 per mile”
“they last you know, 15 seconds, tops”
#pace#speed#marathon#kipchoge