THE MARCH WINDOW: HOW TOKYO BECAME THE WORLD'S MOST COMPETITIVE MARATHON
On the morning of 3 March 2024, Eliud Kipchoge lined up at the Tokyo Marathon as the defending champion and course record holder. He had run 2:02:40 two years earlier, the fastest time ever recorded on the course. He finished 10th in 2:06:50.
Benson Kipruto of Kenya won in 2:02:16, a new course record and Japanese all-comers' record. Kipruto had entered as a strong contender but not the clear favorite. Kipchoge's finish outside the top five was one of the most surprising results in recent major marathon history, and it arrived on a course that has been producing surprises, records, and landmark performances since 2007.
The Race Tokyo Built
The Tokyo Marathon launched in 2007, replacing the Tokyo International Marathon and the Tokyo Women's Marathon with a single World Marathon Major. The race was designed from the start to attract elite fields with competitive prize money and world-class organization. It joined Boston, London, Berlin, Chicago, and New York as an Abbott World Marathon Major in 2013.
The course starts near the Tokyo Metropolitan Government Building in Shinjuku, runs through the city's western districts, and turns back through the center, passing landmarks including Asakusa and the Imperial Palace before finishing in front of Tokyo Station. The elevation profile is nearly flat throughout. Total elevation change is under 100 meters. For a 42.195-kilometer course, the gradient is negligible.
The timing is deliberate. Early March in Tokyo typically delivers conditions that favor fast racing: temperatures between 8 and 12 degrees Celsius, low humidity, and minimal wind interference. The window is not guaranteed, but it opens more consistently in early March Tokyo than at almost any other World Major.
How the Record Moved
The first major benchmark at Tokyo arrived in 2014. Dickson Chumba of Kenya ran 2:05:42, shattering the previous course record by more than three minutes. The time reflected what was possible on the flat course with the right conditions. It stood for three years.
Wilson Kipsang came to Tokyo in 2017 and ran 2:03:58. At the time, that was the third-fastest marathon ever run. Kipsang had already set a world record at Berlin in 2013 with 2:03:23. He treated Tokyo as a fast course and the result confirmed it.
The record progression accelerated from there. Birhanu Legese of Ethiopia won in 2019 with 2:04:48, becoming the fastest Tokyo debut since Kipsang. When the 2020 edition was held as an elite-only event due to COVID restrictions, Legese won again in 2:04:15, running through a hip injury sustained in the first kilometer. His back-to-back wins from 2019 and 2020 were the first consecutive victories by one man in Tokyo's history.
Legese's 2019 Berlin time of 2:02:48 had placed him third on the all-time marathon list. He was the best marathoner of his generation not named Kipchoge, and Tokyo gave him two of his most important wins.
Kipchoge's Chapter
Kipchoge arrived at the 2022 Tokyo Marathon as the world record holder and the most decorated road runner in the sport's history. The 2021 edition had been postponed due to COVID and was held in March 2022. Kipchoge ran 2:02:40, a new course record, and won by more than two minutes over the rest of the field.
That performance established what Tokyo was capable of delivering. The course record now sat at 2:02:40, the fastest time ever run at a World Marathon Major other than Berlin. The field assembled around Kipchoge had produced multiple sub-2:04 performances. Tokyo had become the Major where fast things happen.
Kipchoge did not race Tokyo in 2023. He returned in 2024 as defending champion. What followed was one of the defining results of the recent marathon era.
Kipruto's 2024 Breakthrough
Benson Kipruto is the younger brother of Dickson Chumba, who had set the 2014 course record. Their family now bookends the modern Tokyo course record era: Chumba's 2:05:42 in 2014, Kipruto's 2:02:16 in 2024.
Kipruto ran away from the field in the final third of the 2024 race, building a gap that Kipchoge could not close. Kipchoge's 2:06:50 finish was 4:34 slower than his own course record. The gap between the winner and the defending champion was unprecedented for a race of this caliber.
Kipruto's 2:02:16 also set the Japanese all-comers' record, the fastest time ever run on Japanese soil. The women's all-comers' record fell on the same day: Sutume Asefa Kebede of Ethiopia won in 2:15:55, also a new course record.
Two course records on the same morning, on a day the most famous marathoner in the world finished 10th. Tokyo 2024 was the most consequential single morning in the race's history.
The Women's Race
The women's field at Tokyo has been somewhat less record-focused than the men's, but the 2024 result changed that. Kebede's 2:15:55 was a substantial improvement on the previous women's course record and one of the fastest women's performances at any World Major outside London.
Kebede won again in 2025, making her the two-time defending women's champion heading into 2026. Her back-to-back wins parallel Legese's men's consecutive victories from 2019 and 2020, and they suggest that Tokyo's course and conditions reward athletes who have raced it before.
The women's field at Tokyo has historically been somewhat thinner than the men's, reflecting the broader distribution of top women's marathon talent across the spring season. London in the same month draws heavily from the women's elite pool. Tokyo's women's field has been competitive without consistently producing the results depth that the men's race delivers.
Why Tokyo Works
The factors that make Tokyo fast are well understood. The course is flat and urban, with minimal turns and good road surfaces. The early March date delivers cool temperatures in most years. The World Athletics Platinum Label status and prize structure that includes a $200,000 world record bonus attract fields that take record attempts seriously.
The pacing infrastructure at Tokyo is sophisticated. World-class pacemakers are standard. The elite start is organized to maximize early splits. The logistics support competitive racing rather than simply facilitating completion.
There is also a competitive dynamic specific to Tokyo. The race is held on the same general March weekend as other major road events, but the Japanese organizational standard and the focused elite field create an environment where runners are racing the course as well as each other. Kipsang's 2017 result was not a byproduct of a close race. It was a time trial on a flat course with good conditions. The same could be said of Kipchoge's 2022 win and Kipruto's 2024 record.
What Comes Next
The men's course record of 2:02:16 set by Kipruto in 2024 sits 24 seconds outside the world record of 1:59:40.2 set by Kipchoge in Vienna's Prater in 2019, though that time is ineligible for record purposes. The official world marathon record is 2:00:35, set by Kelvin Kiptum at Chicago in 2023. Tokyo's best time is 1:39 off that mark.
The gap is not small, but Tokyo has demonstrated the ability to produce fast conditions and deep fields. If the world record is to be approached on a mass-participation course, Tokyo is among the settings where that could happen.
Kipchoge's 2024 result raises questions about whether he will return to Tokyo and what he will run if he does. Kipruto has the course record and the profile of an athlete who could lower it further. Kebede is the two-time defending women's champion on a course she runs well.
Tokyo's place in the marathon calendar was already secure by 2022. The 2024 edition confirmed something more specific: this race, on the right March morning, is where careers are made and records fall.
Tokyo's rise as a record venue is part of a larger story. For the full arc from 2007 to World Major status, see the Tokyo Marathon history.