On April 26, 2026, Sabastian Sawe crossed the finish line of the London Marathon in 1:59:30.
Eleven seconds later, Yomif Kejelcha finished in 1:59:41.
Two men broke 2 hours in a record-eligible marathon on the same day, and they did it in completely different ways.
The gap between their methods is what makes this race so useful for the rest of us.
Because when two athletes reach the same historic result through radically different paths, the overlap between their approaches tells you what actually matters.
So, in this article we’re going to breakdown 6 insights into their training and, more importantly, research-backed lessons you can apply to your own training.
1. Race-Day Fueling at 115g Carbs Per Hour — Why Your Gut Needs a Training Plan Too
Sawe’s fueling protocol for the London Marathon is the most detailed elite nutrition plan ever made public.
He averaged 115 grams of carbohydrates per hour using Maurten’s hydrogel products.
Research published by Maurten’s sports science team found that consuming 120g of carbohydrates per hour requires 2.6% less oxygen demand compared to the traditional 60g per hour threshold.
For decades, 60 grams per hour was considered the absorption ceiling for carbohydrates during exercise.
Glucose-fructose blends and hydrogel encapsulation have pushed that limit to 90-120 grams per hour without the gastrointestinal distress that used to make high-carb strategies impractical.
Sawe’s exact race-day protocol started two days out with carb-loading via Maurten Drink Mix 320, followed by a sodium bicarbonate supplement on race morning to buffer acid buildup.
During the race, he took 160ml of Drink Mix 320 at every 5K station from the start through 15K, switched to a caffeinated gel plus lighter drink mix at 20K, then returned to 130ml of Drink Mix 320 at every station through 40K.
Kejelcha took a different approach entirely.
He planned roughly 60ml of fluid at most stations, skipped his 5K bottle altogether, and took nothing at 40K.
He still ran 1:59:41.
The difference is that Sawe’s aggressive fueling likely contributed to his ability to run a faster second half, while Kejelcha faded slightly over the final kilometers despite his extraordinary fitness.
Your Takeaway
The critical piece most runners miss is that Sawe’s stomach did not learn to handle 115 grams per hour on race day.
Maurten’s team made six dedicated trips to Kenya over 12 months to develop and test his fueling plan, progressively conditioning his gut to absorb aggressive carb loads without distress.
Start practicing your exact race-day fueling plan during long runs at least 8 weeks before your goal race, beginning with 30-60g of carbs per hour and increasing by 10-15g per week as your gut adapts.
You do not need to hit 115 grams per hour.
For most runners targeting a 3:00-5:00 marathon, 60-90 grams per hour using a glucose-fructose gel or drink mix is the practical range where the performance gains are real and the stomach issues are manageable.
If you want those numbers dialed in for your specific pace and physiology instead of guessing from a chart, our Marathon Nutrition Blueprint has calculators that build an individualized fueling plan — carbs per hour, hydration, electrolytes, and carb-loading macros — based on your data.
The lesson from Sawe is not the number itself but the process: treat fueling as a trainable skill, practice it during training, and have a specific plan for every aid station rather than winging it on race day.
2. The Greatest Negative Split in Marathon History — How Starting Slow Won the Record
Sawe did not run the fastest first half in marathon history.
He ran the fastest second half.
Data from the official race breakdown shows Sawe passed the halfway mark in 60:29, then ran the second half in 59:01 for the largest negative split in marathon world record history.
His final 12.2 kilometers were run at progressively faster paces: a 5K split of 13:54 (equivalent to a 1:57:18 marathon), followed by 13:42 (1:55:40 pace), and a closing 2.2K in 5:51.
He made his decisive move with one mile remaining, pulling away from Kejelcha and finishing alone.
A physiological analysis of negative split pacing found that starting conservatively reduces early glycogen depletion and limits the accumulation of lactate and hydrogen ions, preserving muscular efficiency and delaying central fatigue.
Your Takeaway
The practical translation is straightforward: when you start slower than your body wants to go, you arrive at mile 18-20 with more fuel in the tank and less metabolic damage to fight through.
Most runners do the opposite.
Race-day adrenaline pushes the first few miles 15-30 seconds per mile faster than goal pace, which burns through glycogen stores at a rate the body cannot sustain for 26.2 miles.
Use a race-day pacing calculator to plan your mile-by-mile splits before you get to the start line, and commit to running the first 5K at 5-10 seconds per mile slower than your goal pace.
Sawe had the fitness to run 59:01 for a second half because he did not waste energy running 58:30 for the first.
The same principle applies at 3:30 or 4:30 marathon pace.
A negative split training approach teaches your body and your brain to trust a conservative start, and the payoff comes in the final 10K when the runners around you are slowing down and you are speeding up.
3. 220 km/Week vs. 120 km/Week — Both Broke 2 Hours
Sawe averaged 220 kilometers per week during his three-month training camp in Kapsabet, Kenya, peaking at 241 km in his heaviest week.
Kejelcha trained in Addis Ababa at 120-140 kilometers per week.
Two runners broke 2 hours on the same day with training volumes that differed by nearly 100 kilometers per week.
Sawe’s approach was high-volume and grinding: 9-10 consecutive training days before a rest day, with his coach Claudio Berardelli adjusting the plan based on how his body responded rather than following a fixed weekly schedule.
Kejelcha’s approach was lower-volume but built on a foundation of world-class speed from the track.
He held the half marathon world record at 57:30 before running his first full marathon in London, which means his running economy and VO2max were already among the highest ever measured in a distance runner.
The difference explains something important about training volume: more miles work, but only when your body can absorb the training load without breaking down.
Kejelcha compensated for lower volume with superior raw speed and efficiency built over years of track racing at 1500m through the half marathon.
Your Takeaway
For most runners, the takeaway is not to chase a specific weekly mileage number.
Consistency across months matters more than any single peak week.
A runner who averages 50 km per week for 16 straight weeks will almost always outperform a runner who alternates between 70 km weeks and 30 km weeks because of injuries or burnout.
Build your mileage to a level you can sustain without missing sessions, and invest the remaining training energy into the quality of your key workouts rather than adding more easy kilometers.
4. The 97-Gram Shoe — What Actually Makes Super Shoes Work
Sawe and Kejelcha both raced in the Adidas Adizero Adios Pro Evo 3, a shoe that weighs 97 grams and became the first sub-100-gram racing shoe ever produced.
Four of the top five male finishers wore the same model, and Tigist Assefa set the women’s world record in it on the same day.
Independent testing of the Evo 3 measured a 1.6% improvement in running economy over the previous version, driven primarily by a new Lightstrike Pro Evo foam that is 50% lighter and delivers 11% more energy return.
The shoe does not use a traditional carbon plate.
Instead, it features an ENERGYRIM: a carbon-fiber structure that wraps around the perimeter of the midsole in a U shape, providing bending stiffness while maximizing the amount of foam under the foot.
The foam technology and how it interacts with the carbon structure is where the real efficiency gains come from, not the carbon plate alone.
This matters for your shoe decisions because the carbon element delivers its largest benefit at elite pace.
Your Takeaway
For a runner targeting a four-hour or five-hour marathon, shoe technology researchers have found that the bigger contribution comes from modern PEBA foam, which is now available in shoes priced well below the $500 price tag of the Evo 3.
You do not need the lightest or most expensive racing shoe to benefit from this technology.
A mid-range carbon-plated shoe with quality PEBA foam in the $150-250 range delivers most of the efficiency gain at recreational pace, and studies have shown the benefit extends all the way down to 10-minute-per-mile pace.
5. Strength Training 4 Days a Week — The Non-Running Work Behind the Record
Sawe completed strength and conditioning sessions plus dedicated physiotherapy work four times per week throughout his training block.
This was not a supplement to his running.
His coach Claudio Berardelli built it into the core structure of the program alongside the 220 km of weekly running.
Strength work for distance runners improves running economy by increasing the stiffness of the muscle-tendon unit, which means each ground contact returns more energy with less metabolic cost.
It also reduces injury risk by building the structural capacity to handle high training loads week after week.
Your Takeaway
Most runners either skip strength training entirely or treat it as an afterthought on easy days.
You do not need four sessions per week to see a meaningful improvement.
Two to three sessions of 20-30 minutes focused on single-leg exercises, hip stability, and calf and foot strength will produce noticeable changes in how your legs feel during the final miles of a long run within 6-8 weeks of consistent work.
6. A “Far From Perfect” Buildup — Why Flexible Plans Beat Rigid Ones
Sawe was injured through the autumn of 2025 and did not begin real training until January 2026, roughly four months before the London Marathon.
His original goal was simply to defend his London title, not to break the world record.
Instead of forcing his way back to full training volume on a fixed schedule, his coach Berardelli designed a reactive program that adjusted based on how Sawe’s body responded from one training block to the next.
Sawe trained 9-10 consecutive days, then took a rest day, breaking from the standard 7-day training week entirely.
Physiotherapy sessions four times per week addressed the lingering effects of his injury and allowed the training load to stay high without accumulating structural damage.
Your Takeaway
This is the opposite of how most runners handle a disrupted training cycle.
The typical response to missed weeks is to compress the remaining plan and try to make up lost fitness by cramming in the sessions that were skipped.
That approach leads to a second injury or a state of accumulated fatigue that shows up as a bad race.
When your training block gets disrupted, adjust the plan to match your current fitness rather than the fitness you planned to have.
Shorten the buildup, protect the key workouts, and let go of the mileage targets that no longer reflect where your body actually is.
Sawe ran the fastest marathon in history on a four-month buildup that started with an injury and never followed a textbook plan.
