Running small-town marathons offers plenty of advantages, such as simpler logistics and quieter, less crowded routes. However, participating in one of the world’s largest marathons offers an unmatched level of excitement and prestige.
Events like the Chicago, Berlin, and Tokyo Marathon—all part of the Abbott World Marathon Majors—draw tens of thousands of runners and spectators. These races are known for their superb organization, guaranteeing smooth logistics, runner safety, and thorough support from start to finish.
The atmosphere in these events is electric, and the spectators keep you energized and motivated through the toughest of miles.
Major marathons are not just races—they are events that celebrate the running community and unite participants from around the world.
The editors here at Marathon Handbook have compiled a list of some of the biggest marathons in the world so you can choose your next big race.
Are you ready to take on one of these legendary events?
What Are the Biggest Marathons In the World?
The list of the biggest marathons in the world is dynamic because some have fluctuating field sizes from year to year. However, we have compiled a list of some of the biggest overall marathons according to field sizes in recent years.
#1: TCS New York City Marathon, New York City, New York, USA
The New York City Marathon had a whopping 51,543 finishers in 2023 and is consistently considered one of the world’s largest marathons.
The NYC Marathon was the first marathon to break the 50,000-finisher mark in 2013. In 2019, there were a record 53,627 finishers.
This marathon, part of the Abbott World Marathon Majors, takes runners through all five boroughs of New York City, including Staten Island, Brooklyn, Queens, Manhattan, and the Bronx, and finishes up in Central Park.
It’s known for its challenging bridges, hilly course, electric atmosphere, and millions of cheering spectators. Running the NYC marathon is a fantastic way to experience New York City’s energy, culture, and history.
#2: TCS London Marathon, London, UK
The London Marathon hosted 53,802 finishers in 2024. This World Marathon Major is not only one of the biggest marathons in the world but also one of the hardest to get into.
In fact, the race organizers have reported that the 2025 TCS London Marathon received 840,000 entrant applications, setting the world record for the most marathon entry applications to date.1News, B. (2024, April 29). Record numbers apply for 2025 London Marathon. Bbc.com; BBC News. https://www.bbc.com/news/uk-england-london-68918984
This marathon is renowned for its iconic course that showcases some of London’s most important landmarks, including the Tower Bridge and Buckingham Palace.
With a vibrant atmosphere and enthusiastic crowds, the marathon offers a unique blend of competitive racing and community spirit. It is also committed to charity, raising millions for various causes.
#3: Bank of America Chicago Marathon, Chicago, IL, USA
The Chicago Marathon is also one of the six Abbott World Marathon Majors and had 52,150 finishers in 2024.
Because of its flat, fast course, the Chicago Marathon is extremely popular among runners looking to set a PR or hit a qualifying time to get into the pretigous Boston Marathon.
The Chicago Marathon is currently home to the men’s and women’s marathon records. The late Kelvin Kiptum set a men’s world record of 2:00:35 on October 8, 2023, and Ruth Chepngetich broke the women’s world record for a mixed-sex race with a time of 2:09:56 on October 13, 2024.
The course winds through 29 neighborhoods, showcasing the city’s diverse culture and iconic architecture.
Highlights include running along Lake Michigan, passing historical sites such as Grant Park and the Chicago Water Tower, and experiencing enthusiastic crowd support.
#4: Boston Marathon, Boston, MA, USA
The Boston Marathon is not only one of the largest but also one of the most popular and famous marathons worldwide. In 2024, there were 25,554 finishers.
The Boston Marathon is the oldest continually running marathon in the world, having been held every year since 1897.
What makes Boston so alluring and on most runners’ bucket lists is that runners must qualify to participate in the race and face some pretty challenging times.
The point-to-point Boston marathon course starts in Hopkinton, Massachusetts, and finishes on Boylston Street in Copley Square.
The Boston Marathon course is surprisingly difficult. It starts on a downhill for almost the first 10K of the race, which is deceptively tricky for your quads. If you aren’t careful, you can blow your legs right out for the upcoming hilly section of Heartbreak Hill at the 17-mile mark.
#5: BMW Berlin Marathon, Berlin, Germany
The Berlin Marathon race organizers announced that 54,280 people finished the race in 2024, a new world record. This race surpassed the 54,175 finishers from the Paris Marathon in April and the 2019 New York City Marathon record of 53,627.2BMW BERLIN-MARATHON is the largest marathon in the world with 54,280 finishers. (2024, September 29). Bmw-Berlin-Marathon.com. https://www.bmw-berlin-marathon.com/en/news-media/news-blog/detail/the-largest-marathon
Berlin is also the site of eight men’s marathon world record performances. Its flat, fast course makes it a great race to push for that next PR.
With its start and finish at the iconic Brandenburg Gate, it is one of the most iconic marathons in the world and has a rich history. You could even turn it into a great marathon destination vacation.
It also offers optimal running weather and good timing after marathon training through the summer.
#6: Tokyo Marathon, Tokyo, Japan
The Tokyo Marathon is another Abbott World Marathon Major, with 35,710 finishers in the 2024 edition.
Its course is known for being impeccably organized as it surges through the heart of Tokyo. As you can imagine, it attracts runners from all over the world who wish to make it a destination marathon and immerse themselves in the culture.
It’s a great opportunity to visit a fascinating country with welcoming people, great food, rich history, and varied and stunning landscapes.
#7: Paris Marathon, Paris, France
In 2024, 54,175 finishers participated in the Paris Marathon, which was also the host of the 2024 Summer Olympics, where marathoners smashed Olympic records.
This marathon offers runners a scenic route through the streets of one of the world’s most beautiful cities, passing landmarks like the Eiffel Tower, Arc de Triomphe, and Seine River.
The course weaves through historic streets, with vibrant crowds cheering on participants. Paris is a bucket-list race for both beginners and elite runners alike.
#8: TCS Amsterdam Marathon, Netherlands
The TCS Amsterdam Marathon is renowned for its fast, flat course and stunning scenic route that includes iconic sights like the Rijksmuseum and Vondelpark.
It is a World Athletics Platinum Label event and one of the biggest marathons in Europe. In 2024, there were just under 17,000 finishers.
The Amsterdam Marathon is known for its excellent organization, fun atmosphere, and strong community support, which are all great reasons to put it on your running calendar.
#9: Mexico City Marathon, Mexico City, Mexico
The Mexico City Marathon is one of Latin America’s largest and most prestigious marathons hosting 30,000 finishers in 2024.
This marathon is part of the World Athletics Gold Label series, attracting elite and amateur runners from around the world.
It is know for its challenging altitude, (about 2,250 meters or 7,380 feet above sea level) which makes it a more physically demanding race, especially for runners unaccustomed to higher elevations.
The scenic course passes by iconic landmarks like Chapultepec Park and Paseo de la Reforma, and the marathon finishes at the historic Estadio Olímpico Universitario.
#10: Shanghai Marathon, Shanghai, China
In 2023, over 30,000 runners participated in the Shanghai Marathon, making it one of the largest marathons in the world.
The Shanghai Marathon is one of China’s most iconic marathons, offering runners a chance to explore the city while participating in a world-class event. In 2024, it was named a candidate race for the Abbott World Marathon Majors, which shows its prestige and impeccable organization.
The marathon course takes runners through many of Shanghai’s famous landmarks, including the Bund, the Oriental Pearl Tower, and People’s Square, while giving them a great view of the city’s impressive skyline.
The Shanghai Marathon is known for its flat and fast course, which makes it ideal for hitting personal bests.
Other Honorable Mentions:
- Athens Marathon (20,000 participants)
- Amsterdam Marathon (20,000 participants)
- Toronto Marathon (10,000 participants)
Is It Better to Run a Big Marathon Or A Small Marathon?
If you’re still unsure whether a big or small marathon suits you best, we’ve compiled a detailed list of pros and cons.
This way, you can easily weigh the factors that matter most to you, such as crowd size, organization, course atmosphere, and logistics, and decide which type of race will give you the experience you’re looking for.
Let’s start with if you are looking to PR.
If you want to run one of the fastest marathons to set a PR, you might wonder whether running a big marathon or finding a smaller one is better.
There can be benefits to both.
For example, some of the fastest marathons, in terms of the difficulty of the course, are actually smaller marathons, such as the Baystate Marathon in Massachusetts. The same could be said for many of the fastest marathons in the world.
The benefit of running a smaller marathon when you are trying to set a PR is that the course will be less crowded.
Therefore, you will not have to weave around other runners, and you can more easily settle into your pace without getting caught up in the throngs of runners around you who may or may not be running at your intended marathon pace.
If you have friends or family members who are coming to support you during your marathon, it’ll be easier for you to find them along the course and hear their cheering and words of encouragement.
Running one of the biggest marathons in the world, such as the Boston Marathon or New York City Marathon, can be challenging. Personalized support along the course will be difficult to find.
However, many of the fastest marathons are indeed massive marathons with a huge field size.
The benefit of running one of the biggest marathons in the world is that there will be no long stretches of the race course where you are trying to maintain your pace by yourself.
You will have other runners to work with, so it is actually like you are in a race rather than on a solo long run.
The energy of the crowds along a big city marathon is also much more consistent, which can help distract you from the challenges of running 26.2 miles.
The biggest marathons in the world also tend to have excellent support along the course, with plenty of water and medical tents if necessary.
What about prestige?
Some runners love the pride and notoriety that can come from running one of the largest marathons in the world.
Your non-runner friends are much more likely to appreciate your accomplishments when you finish the Boston Marathon, New York City Marathon, or London Marathon than if you finish a small marathon that they have never heard of.
They may even be more likely to spectate or watch it on TV, providing an added layer of motivation that pushes you all that much harder to hit your PR.
Of course, as runners, we know that 26.2 miles is 26.2 miles no matter what marathon course you run, and some of the hardest marathons in the world are actually little tiny trail marathons and small-town marathons that even plenty of avid runners have never heard of.
That said, getting a good ego boost is always nice when friends, coworkers, and family members seem extra jazzed about the marathon you are running.
The most popular marathons in the world tend to be recognized by non-runners and have the largest field sizes.
Plus, these marathons tend to have a stronger elite field, which means that there will be a bunch of elite runners up front and a strong sub-elite field, which may pull the entire pace of the marathon along at a faster clip even if you are not the one leading the chase on race day.
And logistics?
Even though most big marathons are impeccably organized, there are often tougher logistics, such as mandatory shuttle buses to the start, long lines, and hours of waiting in a corral for the gun to go off.
With a smaller marathon, you may be able to drive to the start line or get dropped off and picked up easily without needing to wait for hours on each end.
There are compelling arguments for both types of marathons; it all depends on what matters most to you.
You also may want to forget about PRs and prestige and run one of the most beautiful marathons in the world. For the ones that should be on your bucket list, read our next guide:
I think the data needs to be updated.
Berlin marathon 2023: 47,912 runners