This event is hosted in Trackmania and in the title(s) Trackmania² Stadium. You can participate on your own and registration is not required. You need to have the title pack ESL installed. And there is a map pool that you can contribute to.
TrackMania Mini Round is a weekly event. Every week, a mappack (5 tracks) is available to train for the round session. Mappack downloadable in ManiaExchange every Monday and the round sessions take place every Sunday at 3pm.
Type Moski in the server research to find the server of TrackMania Mini Round.
Mappacks on MX : https://tm.mania-exchange.com/mappack/search?username=arkahon&order=0&limit=20
Discord TrackMania Micro Event : https://discord.gg/HZWxutJ
This event has no upcoming dates.