Meda100Marathon is an international MTB event organized by Mozinho Aventura, in partnership with the Municipality of Mêda.

Mozinho Aventura is a club licensed in the Portuguese Cycling Federation and in the UCI and, throughout its 10 years of its history, has already built a vast experience in the organization of sporting events for mountain biking and DuatloX, both nationally and internationally.

The event had its first edition in 2009, then as a simple proof of leisure.  

At the following year, it was already part of a regional championship and, soon in 2011, in the 3rd edition, it has received the National Marathon Championship (XCM).

IN 2012 and 2013, it was time to join the Portuguese Marathon Cup (XCM), in order to make an interregnum in 2014, organizing the Duathlon Mountain Bike Cup of Portugal, in order to prepare the internationalization and the application for the World Circuit UCI World Marathon Series.

In 2019, it will be the fifth consecutive year among the world’s elite mtb marathon races.