Morava Run - proti proudu is a 286 km event based in Kostice, a village in the Břeclav District of South Moravia. The format is part long-distance trek and part relay run, with the listed schedule running from Friday into Saturday rather than fitting into a single short race window.
The name means “Morava Run - against the current,” which points to the upstream idea in the title. The available details are lean, but the distance alone says a lot: this is built for teams, walkers, and endurance runners who are ready for an overnight effort rather than a normal city race.