Run a marathon in Budapest alongside Unesco World Heritage sites! It is the 38th time running enthusiasts can conquer the queen of distances in the Hungarian capital while exploring the city's most beautiful parts. The 2-day event (14-15 October) is a true bucket-list challenge, with participants from hundreds of countries. You can expect a big buzz with bands and enthusiastic supporters, creating a proper festival atmosphere. But there is no need to sign up for the 42k to be part of it: shorter distances are available, and you can always come to cheer, too.
 
Details and registration here