New! Sign up for our free email newsletter.
Reference Terms
from Wikipedia, the free encyclopedia

Marathon

The marathon is a long-distance road running event of 42.195 km (26 mile 385 yards or 26.21875 miles). The length of a marathon was at first not fixed, since all that was important was that all athletes competed on the same course. The exact length of an Olympic marathon varied depending on the route established for each venue.

For most runners, the marathon is the longest run they have ever attempted. Many coaches believe that the most important element in marathon training is the long run. Usually recreational runners try to reach a maximum of about 20 miles (32.2 km) in their longest weekly run and about 40 miles (64.4 km) a week in total when training for the marathon. More experienced marathoners may run a longer distance, and more miles or kilometres during the week. Greater weekly training mileages can offer greater results in terms of distance and endurance, but also carries a greater risk of training injury. Most male elite marathon runners will have weekly mileages of over 100 miles (160.9 km).

Related Stories
 


Health & Medicine News

October 16, 2026

USC scientists have discovered a way to create a potentially renewable supply of genetically engineered immune cells that can attack cancer and strengthen the body's natural defenses. By growing and ...
Yale scientists have uncovered how the stress hormone cortisol helps the brain turn emotional experiences into stronger, longer-lasting memories. The discovery reveals that stress can reshape ...
Scientists have discovered how to turn a protein that normally fuels cancer growth into a weapon against it. By activating PPARD in immune cells, researchers made them better at burning fat and attacking tumors, slowing or stopping cancer growth in ...
Scientists have uncovered a hidden biological mechanism that helps explain how exercise can reverse some of the damage caused by muscle aging. The key is a gene called DEAF1, which becomes overactive with age and interferes with the muscles’ ...
Eating late at night could be putting your liver at risk, according to a large study led by Oregon Health & Science University. Researchers analyzed data from nearly 200,000 people and found that those who regularly ate after dinner or around ...
Scientists have discovered that unusually small cancer cells carrying extra chromosomes can be far more aggressive than larger ones, growing faster, spreading more readily, and resisting common treatments. The surprising finding could help explain ...
A rare examination of an Alzheimer’s patient’s brain revealed that regions cleared of amyloid plaques had remarkably little of the harmful tau buildup associated with memory loss, while ...
Strokes are becoming alarmingly common among younger adults, with rates nearly doubling among people ages 20 to 54 over nearly three decades. Researchers found that blocked blood vessels in the brain ...
Popular diabetes and weight loss drugs such as Ozempic and Wegovy have been linked to a slightly increased risk of a rare condition that can cause sudden, potentially permanent vision loss. Although the risk remains very low, Rutgers researchers say ...
A 47-year study has uncovered a surprising turning point in physical aging: fitness and strength begin declining around age 35, even among people who exercise regularly. Researchers found that this decline accelerates as people get older, but ...
A major study found that several cancers are rising faster among younger adults in England, even as smoking, diet, and other established risk factors have generally improved. Excess weight explains only part of the increase, leaving scientists ...
Ice baths, massages, compression garments, and recovery supplements promise faster muscle recovery, but research suggests their benefits are often overstated, and some techniques may even undermine long-term gains. Scientists say the most effective ...

Latest Headlines

updated 12:56 pm ET