The expedition navigates over mountains, down rivers, and through forests to finally reach the Pacific Ocean. Explore the dates below for big events in 1805.

February 11
Sacagawea gives birth to a baby boy, Jean Baptiste, nicknamed "Pompy."

April 7
The "permanent party" consisting of Lewis and Clark and thirty-one others leave Fort Mandan and continue west. The remaining people return to St. Louis with letters to their families and discoveries for President Jefferson.

April 29
Lewis and another hunter kill a grizzly bear.

May 14
Charbonneau lets go of the boat rudder and almost overturns the boat. Sacagawea rescues most of the items washed overboard and impresses Lewis and Clark with her calmness.

June 13
Lewis arrives at the beautiful Great Falls of the Missouri.

July 27
The expedition reaches the Three Forks of the Missouri.

August 17
The expedition meets a group of Shoshone Native Americans, including Chief Cameahwait, Sacagawea's brother. Sacagawea helps the expedition trade for horses.

August 30-September 22
They cross the snowy Bitterroot Mountains. Several horses fall and are injured and the expedition almost runs out of food.

August 25
Lewis's shipment of artifacts, animals, and writings arrives at Monticello, Thomas Jefferson's house. Most of the objects sent to Jefferson have disappeared over the years, and the only original Lewis and Clark object is a pair of Elk Antlers.

September 20
They meet a group of Nez Perce Native Americans who give them fresh salmon and new clothes.

October 6
The expedition builds dugout canoes and paddles down the rapids of the Clearwater and Snake Rivers. One boat hits a rock and sinks, along with most of their food.

October 16
The expedition reaches the Columbia River.

November 18
The expedition reaches the Pacific Ocean.

December 7
They settle down for winter at Fort Clatsop.

1806
The explorers return home to St. Louis, Missouri. Explore the dates below for big events in 1806.

March 23
The expedition leaves Fort Clatsop and heads home.

September 20
The Corps of Discovery arrive at a frontier village, the first white settlement they have seen since 1804.

September 23
The explorers arrive back in St. Louis.

Continue to see the trail today.

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In 1805, Lewis and Clark ran up against the ferocious grizzly bear. Click here to add the bear to your specimen box or click here for a printable version.