About Global Marathon Routes

Who writes this site

Every course guide on Global Marathon Routes is written and maintained by the site's editorial team rather than bylined to a single person. The team is made up of runners who have raced or paced these courses and mapmakers who build the interactive pages. Where we rely on someone else's work, we say so and link to it.

How we research a course guide

• We start from the organizer's own publications: the official course map, the race handbook and the published results.
• Records, dates and field sizes come from official results or the Abbott World Marathon Majors, and the year of each figure is stated on the page.
• Everything a runner acts on — entry routes, start and finish locations, cut-off times, transport — is checked against the official race site before publishing.
• Where a figure is an estimate, the page says so. Course traces on the maps follow the organizer's published course, simplified for the screen.

Review and corrections

Guides are re-checked whenever a race announces its next edition, and every page carries the date it was last reviewed. If something is out of date or wrong, tell us: corrections are made in the page itself rather than buried, and the review date is updated with them.

What's inside

• An interactive world map with continent filters and one clickable marker per host city
• Course analysis for every race: start, finish, landmarks and course records on a Leaflet map
• Side-by-side comparison of field sizes and records, with charts and a full data table
• A country and continent browser for the seven host cities
• Free online tools: pace calculator, split tables, time predictor and unit conversions

Data and accuracy

Course traces follow the organizers' published courses, simplified for the screen, so they sit close to — but are not a survey of — the line the race is run on. Records, dates and field sizes come from public sources and change with each edition; always check the official race site before making plans.

Built with

Next.js (App Router), Tailwind CSS and shadcn/ui for the interface, Leaflet with OpenStreetMap tiles for the maps, ECharts for the charts, Markdown for the course guides, and a lightweight in-house i18n layer.

Languages

The site ships in English today. The translation layer is ready for Chinese, Japanese, French and German, and more languages can be added by dropping in a dictionary file. Course guides are Markdown files, so they can be translated one file at a time.