From the modern race’s invention in the 1890s to the ratified sub-two-hour men’s marathon in 2026: Olympic champions, women’s fight for inclusion, wheelchair racing, the city-marathon boom, record progression, technology and the culture of finishing. **How to explore.** Chapter headings and illustrated era bands organize the story. Hover over a small cluster to fan out its moments; open an entry for its notes, references and media credit. Tags let you follow women, Olympics, records, races, wheelchair competition, culture or integrity. Relationship arcs connect selected precedents, performances and institutions; an arc denotes historical connection or sequence, not proof of causation. **Scope and dates.** The plotted chronology begins in 1894, when Michel Bréal proposed the modern race. The 490 BCE battle and later messenger legend are explained beside that proposal, rather than plotted as if an ancient marathon race had occurred. Modern dates are Gregorian calendar-day markers at midnight UTC, not race start times. Year-only dates and editorial era boundaries are labeled. Coverage is selective and global, with research checked through 27 October 2026; recent results do not imply exhaustive coverage of every race. **Reading records carefully.** Pre-2004 road marks are generally described as world bests. Official world records require eligible courses and competition conditions. Women-only records are distinguished from overall women’s records achieved in mixed races. Kipchoge’s assisted sub-two-hour exhibition in 2019 is distinguished from Sawe’s eligible 1:59:30 in London in 2026. Wheelchair performances belong to their own divisions and classifications. Disputed early marks and the scope of anti-doping decisions are identified in the notes. **Sources and media.** Summaries are original and each entry links supporting references. Historical coverage uses event and athlete articles alongside World Athletics, race organizers, the International Paralympic Committee a…
111 moments · 1894-09-15T00:00:00Z CE – 2026-10-11T00:00:00Z CE · by @athan · @athan
The international federation standardizes 42.195 km
origins
rules
institutions
The IAAF adopts **42.195 km** as the marathon distance, choosing the length used at London 1908. Standardization makes performances more comparable, but accurate measurement and record eligibility remain separate questions. It does not turn every earlier long-distance road performance into an equivalent modern marathon. **Read more:** [Source 1](https://worldathletics.org/disciplines/race-walks/marathon) **Image:** [Dorando Pietri 1908.jpg](https://commons.wikimedia.org/wiki/File:Dorando_Pietri_1908.jpg) — Unknown author Unknown author; Public domain. Wikimedia Commons. The image may be a later portrait or a contextual illustration; its file page gives the creation date.
Date precision
Year only; 1 January is a placement marker, not the date of the federation decision.
timescale.info