Mt Elbrus (5,642m) is the highest summit in Europe. The route starts in the Azau Valley at 2450m, and passes by Barrels Hut at 3900m on the way to the top of the higher West Summit. This route is the course for the Redfox Elbrus SkyMarathon:
The Elbrus Race (or RedFox Elbrus Race), is an international skyrunning competition held for the first time in 2008. It runs each May at Mount Elbrus, Russia. which at 5,642 m is the highest mountain in Europe. The race has formed part of the Skyrunner World Series circuit four times.[2]
Elbrus SkyMarathon, a SkyMarathon (12 km / 3,342 m), from 2,350 m up to 5,642 m MSL[3].
https://en.wikipedia.org/wiki/Elbrus_Race