Pick the right marathon.
Run it right.
Course profiles, race-day weather history, Boston qualifying intel, and course-adjusted pacing plans — the data that actually decides your marathon, in one place.
Fastest courses
All 43 races →California International Marathon
Sacramento, USA · December
Guides & rankings
The Flattest Marathons in the World
Marathons with the least climbing, ranked — where the course gives you nothing to blame.
The Best Marathons to Qualify for Boston
The courses where runners actually hit their BQ, combining flat profiles, cool weather, and dialled-in organisation.
Downhill Marathons: Free Speed, Real Cost
Net-downhill courses ranked by drop — and what that drop actually does to your race.
All Seven World Marathon Majors, Compared
Berlin, Boston, Chicago, London, New York, Tokyo, Sydney — courses, entry odds, and which to race for time.
The Best Fall Marathons in Europe
September to December in Europe is peak marathon season — the fastest options ranked.
Fast Winter & Early-Spring Marathons
December to March options for runners who peak while everyone else hibernates.
The Biggest Marathons in the World
The largest marathon fields on earth, ranked by finishers.
The Fast Marathons of Iberia
Spain and Portugal quietly host some of the fastest, best-value marathons in the world.
The Most Iconic Marathons in the World
The bucket-list races — courses where the history and the finish line matter more than the clock.