Fastest Marathon Time: World Records + Top Runners

What is the fastest marathon time ever run? The marathon world record has been broken repeatedly in recent years, with times once thought impossible now becoming reality. Here’s a look at the current records, the athletes who set them, and the full progression of marathon world records.

The marathon has a rich and storied past, and there’s always something gratifying about learning the history and evolution of an event; it connects you more to the sport. Learning about the progression of the marathon world records is particularly exciting.

So, the fastest marathon time ever? Well, that depends on how you define it. Is it a ratified world record, an unofficial course record, or a standout performance on one of the major marathon courses? Each has its own context and significance.

In this guide, we’ll explore the progression of marathon records, looking at the differences between official world records, course-specific records, and iconic unofficial times. Join us as we examine how the fastest marathon performances have evolved over the years and across the globe.

How Do You Set a Marathon World Record?

Like other sanctioned race distances, marathon world records must be ratified by World Athletics, the international governing body for running and “athletics” in general.

Certain eligibility criteria must be satisfied for any marathon performance to be ratified as a world record. 

Examples of some of the criteria for a race performance to count as a marathon world record include the following:

• The time must be faster than the current marathon world record.
• The marathon course has to be the official distance of 42.195 km (this works out to an unofficial distance of 26.219 miles) long, as measured using a specific protocol with a calibrated bicycle.
• The performance must occur at an open, official, sanctioned race.
• If connected by a straight line, the starting line and finish line cannot be more than 50% of the race distance (13.1 miles) apart.
• The net downhill of the marathon course cannot be more than an average of 1 m/km of the race, so essentially, the elevation of the finish line cannot be more than 42 meters lower than the starting line.

Other eligibility criteria include wind speed for a tailwind, the use of pace cars and pacers, and the assistance that athletes receive during a race (for example, they have to pick up their own fluids rather than be handed them).

What Is the Marathon World Record for Men?

Before we take a look at how far we’ve come, let’s see where we are now. What is the current marathon world record? 

The late Kenyan athlete Kelvin Kiptum set the men’s world record on October 8, 2023, at the Chicago Marathon, with an astonishing time of 2:00:35. This extraordinary performance broke the previous world record then held by Eluid Kipchoge by 34 seconds.

This marathon world record time equates to an average pace of 4:36 min/mile or 2:15 min/kilometer over the 26.2-mile distance.

What Is the Marathon World Record for Women?

The women’s marathon world record isn’t as clear-cut as the men’s marathon world record because the IAAF recognizes two world records for women—one from mixed-gender races and one from women-only races.

The rationale behind this distinction is that in a mixed-gender race, women theoretically have the advantage of having male competitors surrounding them to work with, conceivably helping to pull them along to a faster time, whereas, in a women’s-only race, the leaders are on their own.

Therefore, in most cases, a winning time for the fastest woman in a mixed-gender race will be faster than a winning time in a women’s-only race, though, of course, there can be exceptions to this trend.

Kenyan athlete Ruth Chepngetich shattered the women’s world record with an extraordinary time of 2:09:56 at the 2024 Chicago Marathon on October 13, 2024.

Competing in a mixed-sex race, she delivered a groundbreaking performance, becoming the first woman to break the 2:10 barrier, cementing her legacy in marathon history.

The current “women only” marathon world record was set by Peres Jepchirchir on April 21, 2024, at the London Marathon during the elite women’s race with a time of 2:16:16.

Progression Of The World Records

Although the first marathon was held in 1896, the distance was approximately 25 miles. The official marathon distance was not standardized by the IAAF until 1921, so marathons prior to that year were often a bit shorter than 42.125 kilometers.

As per Top End Sports, the progression of the men’s marathon world record times, as recognized by the IAAF and/or the Association of Road Racing Statisticians (ARRS), occurred as follows:

According to Wikipedia, the progression of the IAAF marathon world record for women is as follows:

What Is the Fastest Boston Marathon Time?

According to the criteria established by the IAAF, a marathon performance must be ratified as a world record in order for it to be considered a world record. Even the fastest Boston Marathon times will never be considered a world record.

For example, at the 2011 Boston Marathon, Kenyan runner Geoffrey Mutai ran what was then the fastest marathon time ever, with a performance of 2:03:02.

However, rather than recognizing this performance as the new marathon world record, the IAAF called it “the fastest Marathon ever run,” citing that the mark did not count as a marathon world record due to the elevation drop and the fact that the route is a point-to-point course.

That said, Mutai’s 2:03:02 is still the fastest Boston Marathon time for men, while the fastest Boston Marathon time for women is 2:19:59, held by Ethiopia’s Buzunesh Deba.

The fastest marathon times for all six Abbott World Marathon Majors are as follows: 

What Is the Fastest Marathon Time Ever?

Due to the strict marathon world record eligibility criteria, Kipchoge’s amazing 26.2-mile finish time of 2:00:25 run on May 6, 2017, as part of Nike’s Breaking2 Project did not count as a marathon world record.

For example, it was not an open race, and pacers entered halfway through the event, both of which nullified the effort as a world record attempt.

Kipchoge competed in a similar event, the Ineos 1:59 Challenge, in Vienna on October 12, 2019. There, he ran the first sub-two-hour marathon in a time of 1:59:40.2.

Although this is technically the fastest marathon time ever run, it is not an official marathon world record, again because of various eligibility violations, such as not being an open event and having a pace car. 

With that said, this is the fastest marathon time run, recognized in the Guinness Book of World Records, and is the best marathon time in the world to date.

What do you think will be the official marathon world records for men and women 10 years from now? When do you think the 2-hour barrier will be broken in an official marathon? Will women continue to close the gap?

By now, you must be bursting with inspiration and motivation to break your marathon PR! Check out our database of marathon training plans and let us help you get there: