Sabastian Sawe holds the world record for the marathon

Eliud Kipchoge broke the 2-hour mark in a 2019 exhibition

In 2019, Kenya's Kipchoge ran 1:59:40.2, though it was part of an exhibition that included numerous aids—including elite runners cutting his wind and a laser marking the necessary pace—not permitted in officially sanctioned events. As such, it is not eligible for the world record.

The Adidas shoes that helped break the marathon's 2-hour barrier

Two men broke the two-hour mark at the 2026 London Marathon, a feat previously unofficially achieved only by Eliud Kipchoge, thanks to a number of aides not permitted in an official race. Both men who broke the two-hour barrier in London wore the same shoe, the Adizero Adios Pro Evo 3, a new model that weighs just over three ounces.

Watch Kipchoge break 2 hours in the marathon

The feat was once considered impossible, but one of the world's greatest marathoners got to work (with the help of a team of scientists and some of the world's most elite distance runners) to break that boundary in Vienna in 2019. The final stretch of the run is an emotional moment for Kipchoge, who doesn't even appear to be winded.

One ethnic group in Kenya is responsible for most of the country’s running success

Both the men’s and women’s world record holders in the marathon hail from the same region in Kenya. They’re Kalenjins, a minority ethnic group responsible for nearly 73% of the country’s Olympic gold medals in running. Studies have determined that the success is thanks to high-altitude training, a healthy diet, and a tradition of excellence.

Frank Shorter was the first American to win the 26.2-mile Olympic marathon

The running legend became the first American to win the 26.2-mile Olympic marathon in 1972 at 2:21:19. The televised race contributed to a nationwide running boom and helped popularize the event.

Some Nike shoes are actually making runners too fast

In 2018, Kenyan runner Eliud Kipchoge lowered the world marathon record to 2:01:39 in a pair of Nike Vaporflys. The unusually thick running shoes sparked controversy around the shoe regulations for professional runners.

There are over 800 annual marathons, but only seven deemed World Marathon Majors

The races—Tokyo, Boston, London, Berlin, Chicago, Sydney, and New York City—are on some of the best-known courses in the world and are run by some of the sport’s top athletes.

The oldest marathoner was 100

Fauja Singh was 100 when he completed the Toronto Waterfront Marathon in 2011 at 8:11:06. Incredibly Singh didn't start running until the age of 89.

Joan Benoit was the first woman to win Olympic marathon gold

Benoit was the first woman to win Olympic gold in the 1984 Los Angeles Games marathon, running 2:24:52. She also won the Boston Marathon twice and held the Chicago Marathon record for 32 years. She’s still going, too, running Boston in a blistering 3:04 at age 61 in 2019.

The modern marathon’s arbitrary distance is thanks to the British royal family

In 1908, the London Games set the marathon distance to 26.2 miles to meet the British royal family’s request that the race start at Windsor Castle and end at their royal box. In 1921, that arbitrary distance became the official length for the marathon.

Chris Nikic is the first person with Down syndrome to complete several marathons

In March 2024, Chris Nikic finished the Tokyo Marathon in 5:39:41. That was the final step towards his ultimate goal of earning the Abbott World Marathon Majors Six Star Finisher distinction. It recognizes runners who have finished Tokyo, Boston, London, Berlin, Chicago and New York.

Runners typically burn 2,600 calories during a marathon

They also burn between 5-10 pounds of water weight, often feel more focused and elated (thanks to increased neurotransmitters), and, oddly enough, temporarily grow about a half-inch shorter due to back muscles tensing.

Women were prohibited from the Boston Marathon, so Bobbi Gibb snuck in

Race directors assumed women could not handle the physical demands of the race. In 1966, Bobbi Gibb hid in the bushes near the starting line, then hopped in the race after it began, and became the first woman to finish the Boston Marathon, albeit unofficially.

Ultrarunning has grown exponentially in the 21st century

Ultrarunning, generally defined as races 50k and longer, has exploded in the past few decades. In 2000, there were 89 official races; in 2023, there were nearly 760. That's a 753% increase.

Robert Browning memorialized the marathon myth in a 19th-century poem

The story of Pheidippides is not likely true, but that hasn’t stopped the story from spreading. Much of that is thanks to Robert Browning, who enshrined the myth for a new generation in a 1879 poem that described the man dying after delivering word of the victory.

The tragic story of Jim Peters

At the 1954 Commonwealth Games, Jim Peters, then one of England's best marathoners, was just steps away from victory. He then fell to the ground and staggered about for 11 minutes until medical services took him out of the race. He'd entered the stadium 17 minutes ahead of the pack, but ultimately never finished. It was the last race of his career.

Computer pioneer Alan Turing was also an elite runner

Alan Turing is credited with helping to found modern computer science, in addition to cracking the Nazi code known as Enigma. Beyond these world-historical achievements, the British mathematician also nearly represented his country in the Olympics in the marathon, running just 11 minutes slower than the eventual gold recipient at the 1948 games. Read more on this lesser-known aspect of the man here.

A deep dive into the lives of Guinness World Record addicts

Most people don't hold any world records. Then, there's this group of adventurers, who are racing to own the most. A look at the ambitious world record pursuers racking up hundreds of accomplishments.

Double world record holder Hunter Ewen helped conquer his fear of balloons, called globophobia, by training to win Guinness World Record titles for balloon inflation.

View the 18 vehicles that broke the land speed record

The battery-powered "La Jamais Contente" was the first car to exceed 100 kilometers (62.1 miles) per hour, achieving the feat in 1899. By 1997, advancements in aerodynamic understanding and engineering led to the Thrust Supersonic Car, a jet-powered vehicle that reached a speed of 1,223.6 kilometers (760.3 miles) per hour.

World records are often broken later in the day—and scientists wonder if muscle clocks explain the difference

For reasons that are still not entirely clear, on average, people tend to lift more weight and achieve other exercise feats later in the day. Theories to explain this discrepancy include muscle clocks are at peak performance in the afternoon and that there's morning-to-afternoon variation in core body temperature, hormones, and neural activity.

Tracking annual working hours per worker in major countries

In 2023, China's workers averaged 2,328 hours per year, far ahead of the second country on the list, the United States, at 1,789. This chart shows the relative decrease of total work time across the world since the late 1800s.

Husky goes way off track at the Westminster Dog Show

Lobo the Siberian Husky lost an agility competition at the Westminster Dog Show in New York City, but won the hearts of the audience after getting off track.

The world's largest coral, as seen from space

The world’s largest individual coral colony—measuring over 100 feet wide and 100 feet long—was discovered in the Solomon Islands. This coral is so large it can be seen from space, and is estimated to be between 300 and 500 years old. The coral's size and health provide hope amidst a global coral bleaching crisis, wherein three-quarters of coral reefs have experienced significant bleaching in recent decades. See the photos from space and learn more here.

Magnus Carlsen became world champion at just 22 years old

Norwegian prodigy Magnus Carlsen won the World Chess Championship in 2013 at age 22, one of the youngest champions in history. He went on to dominate for a decade, peaking at an Elo rating (a modern measure of chess ability) of 2882—the highest ever recorded.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

NBA superstar Victor Wembanyama spent a summer training with monks in central China to train his body and mind.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

See how Ebola tore through Guinea, Sierra Leone, and Liberia in 2014-2016.

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

Larger animals like giraffes, elephants, and blue whales have developed a unique defense against cancer, a phenomenon known as Peto's Paradox

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

A small portion of The Winstons' 'Amen, Brother,' an obscure '60s gospel record, is the basis for thousands of hip-hop tracks, making it one of the most sampled records ever that's informally known as 'the Amen break.'

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

Waves off the coast of Nazaré, Portugal, can reach over 100 feet and are caused by the area's deep underwater canyon geography

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

SpaceX's S-1 or 'prospectus' revealed many previously unknown details about the company, including its unprofitability despite doing $18.7B in revenue in 2025, exactly how many voting shares Elon Musk will have in the company (roughly 85%), and more.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

Explore the archaeological treasures of Pompeii, the city buried under volcanic ash when Mount Vesuvius erupted in 79 CE.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.