Last year was the Trans Julius’ first event, and it was a success but the organizers wanted to make it better for 2018. So they followed a foolproof plan: longer trails and more parties. This year’s event will go from June 21 to 24 in the Julian Alps of Slovenia and is capped at 100 riders. The four-day event will feature four different locations, local food, 36 miles (58 kilometers) of ascent and 16 miles (25 kilometers) of descent. Wait, what? More climbing than descending. Yep. This is not an adventure for the faint of heart, literally.

The event will travel to four different towns: Kranjska Gora, Bohinj, Most na Soči and Cerkno. There is an optional fifth day of riding at the Bike and Fun Park Cerkno on June 25. The enduro has a basic model—ride during the day, party during the night. Easy.

New for 2018, there will be an organized training day at the end of May and the event will be hosting a competition for four free spots, open to riders under 20 years old. The competition will start in March on the Trans Julius Facebook and Instagram pages.

Registration costs 150€ ($186) for the early-bird special, which is available until Feb. 28. If you miss that deadline, the extended early bird is available until March 30 and will put you out 170€  ($210). After that, the regular price is 190€ ($235). Registration will stay open until June 14 or when all 100 spots are filled.