Formerly named as Rinjani Ultra, Rinjani 100 is one of the hardest races on the trail program. In extension to the old route and the famously unmerciful trail from Senaru to Segara Anak Lake before finally crowning the sumptuous Mount Rinjani, the A-race is now a full 100 KM with 9,166 meters of altitude gain. Scaling the Sembalun Hills, traversing ridges and valleys, as well as an immense heath, this trail unquestionably fuses together a breathtaking sight with an extra-brutal race for seasoned mountain runners. There are shorter distances on the program, although you still have to keep a good pace to beat the cut-off time. In any case, your struggles will be greatly paid by the staggering views of the volcano and the ocean surrounding Lombok Island.