Marathon Day

What Is Marathon Day?

Every year on September 12, the world marks "Marathon Day." According to legend, on this day in 490 BC, after the Athenian army defeated the Persians at the Battle of Marathon, a soldier named Pheidippides ran roughly 40 kilometers to deliver the news of victory to Athens, collapsing and dying after reaching the city gates. This act of extraordinary courage became the origin of the modern Olympic marathon, and the day celebrates the human spirit of pushing past one's limits.

How the Distance "42.195km" Came to Be

The marathon's distance settled into its current form through some surprisingly royal influences.

• From legend to sport: At the first modern Olympics in Athens in 1896, the marathon was run at roughly 40 km, based on the legend. In the years that followed, the distance varied slightly from one Olympics to the next.
• A request from British royalty: At the 1908 London Olympics, the race was originally planned to be about 42 km. But when members of the royal family requested that the start be visible from their balcony and that the finish line be placed in front of the royal box, the distance was adjusted to the now-famous 42.195 km (26 miles 385 yards)—a figure that later became the international standard.

The Science of "Runner's High" and the Brain

During long-distance running, the brain undergoes chemical changes that ease pain and create feelings of euphoria.

• Endorphins and endocannabinoids: Sustained intense exercise triggers the release of endorphins and endocannabinoids in the brain. These provide powerful pain relief and a sense of elation, acting as a kind of "natural reward system" that helps the body push past its physical limits.
• Increased brain-derived neurotrophic factor (BDNF): Sustained aerobic exercise increases levels of BDNF, a protein that supports the growth of brain cells. This activates the hippocampus, the brain's memory center, scientifically improving learning ability and cognitive function.

Fascinating Facts About Marathons

• The engineering of carbon-plated shoes: Today's running shoe trends combine carbon plates with highly responsive foam to minimize energy loss on impact and reduce muscle fatigue. This engineering progress has been a major factor behind record-breaking performances.
• The science of carb-loading: Runners often increase their carbohydrate intake in the days before a race to build up glycogen stores in their muscles. This logical nutritional strategy helps prevent the dreaded slowdown after the 30 km mark.
• World records and the "two-hour barrier": Scientific training, precise pacing strategies, and carefully chosen weather conditions all play a role in the ongoing pursuit of breaking the two-hour marathon—a true convergence of biomechanics and data analysis.
• The psychology of mental toughness: When runners "hit the wall," being able to step back and observe their own emotions—a form of metacognition—becomes crucial. Marathon running is a highly intellectual sport that builds psychological resilience through self-dialogue, not just physical fitness.
• The sense of accomplishment from finishing: For the tens of thousands of people who run city marathons, the intense satisfaction of crossing the finish line triggers a surge of dopamine, scientifically reinforcing confidence in tackling challenges in everyday life and work.

Ideas for Spending Marathon Day

• To mark September 12, try walking—or running—a little farther than usual, at your own pace. Moderate aerobic exercise is one of the simplest ways to refresh your mind and relieve stress as the second half of the fiscal year unfolds.
• Create a long-term roadmap. Just as a marathon's 42.195 km is broken into manageable segments, break down your big projects into small steps and acknowledge your progress along the way.
• Pay attention to hydration and electrolytes. Efficient metabolism depends on proper fluid intake—build the habit of staying well hydrated.
• Don't set arbitrary limits on yourself. Like the story of Pheidippides, even a seemingly impossible goal can be reached one step at a time. Reframing your mindset can be the key to breaking through a plateau.

The Steady Determination to Take One Step at a Time Builds Unshakable Confidence—and the Relentless Passion to Push Your Limits Fuels a Richer Tomorrow

September 12 is a day to remember a soldier who ran across an ancient battlefield, and to awaken the endurance within yourself. Life, too, is like a long marathon. There's real value not just in speed, but in keeping your own pace and continuing to the very end. As the months pass since the new fiscal year began, have your days started to feel breathless? Today, like a runner with a distant finish line in sight, take a deep breath and focus on the solid ground beneath your feet. The feeling of steady progress will strengthen your resolve and become the driving force that carries you further—and more authentically—into the new season. Here's to a powerful rhythm and a wonderful autumn ahead.