They struggled with starvation. As Clark wrote, "We Have nothing to eat but roots, which give the men violent pains after eating much of them... I walked out with my gun on the hills which was very steep and high, could kill nothing... Provisions all out, which compels us to kill on of our horses to eat."
This problem continues until they saw the Nez Perce, who traded food with them.
On October 7th, they broke camp and started down towards the river.
The troops then proceeded to travel to one of the roughest spots in the cascades, the last mountain range left in the trek to the Pacific Ocean. On November 7, the corps thought they had arrived at the pacific, but it was just a false alarm. The still had 20 miles to go, unfortunately. Pacific storms pestered the group for three weeks, but in the middle of November, the group made it to the Pacific Ocean.