Note: Please unjoin the event well in advance, if you don't plan to come. You cannot unjoin the event, when it is starting in less than 12 hours. Also please get familiar with the route before hiking.
Disclaimer: Hiking can be dangerous. I am not a mountain guide. Everybody is responsible for her/himself. Make yourself familiar with the route and its requirements. It's recommended to download a map and bring a cell phone.