Lewis and Clark Timeline
Lewis and Clark Picture
Lewis and Clark Journey Timeline

Summary: This article about the historic Lewis and Clark Expedition provides interesting facts via this Lewis and Clark Timeline. Learn interesting facts about the places they visited, the people and Native American Indian tribes they met along the journey, major events of the trip and the dates on which they occured. The Lewis and Clark journey timeline provides a clear overview of the history of the famous expedition from May 14, 1804 when the journey timeline started in St. Louis, Missouri and how the expedition crossed ten modern states all the way west to the Pacific Ocean, their return journey home that ended on September 23, 1806. 

Lewis and Clark Expedition for kids: Facts about the Lewis and Clark Timeline
The following fact sheet provides short, interesting facts via the Lewis and Clark Journey Timeline charting important dates, places, people and events on the historic journey of discovery. Read about their adventures on specific dates via the Lewis and Clark Journals.

Lewis and Clark Timeline: Important Dates on their Journey


Lewis and Clark 1804 Timeline

Lewis and Clark Timeline 1: June 20, 1803: Meriwether Lewis receives instructions and the major goals of the journey from President Thomas Jefferson
Lewis and Clark Timeline 2: May 14, 1804: The Expedition departs from St. Louis in Missouri on their Keelboat down the Missouri River.
Lewis and Clark Timeline 3: May 25,1804: The expedition passes the small village of La Charrette on the Missouri River. Charles Floyd writes in his journal that this is "the last settlement of whites on this river."
Lewis and Clark Timeline 4: June 1, 1804: The explorers reach the Osage River, Missouri
Lewis and Clark Timeline 5: June 26, 1804: They arrives at Kaw Point and the Kansas River.
Lewis and Clark Timeline 6: July 4, 1804: Independence Creek located near Atchison, Kansas is named in honor of Independence Day
Lewis and Clark Timeline 7: July 21, 1804: They reach the Platte River in Nebraska
Lewis and Clark Timeline 8: August 3, 1804: The Corps of Discovery meets the Oto and Missouri Native Indians at Council Bluffs, Iowa.
Lewis and Clark Timeline 9: August 20, 1804: The Corps of Discovery suffers its first and only death, as Sgt. Charles Floyd dies of a burst appendix.
Lewis and Clark Timeline 10: September 4, 1804: Reach the mouth of the Niobrara River that runs through Lakota Sioux lands in Nebraska to the Great Plains
Lewis and Clark Timeline 11: October 8 -11, 1804: Pass Grand River in South Dakota home of the Arikara Native Indians
Lewis and Clark Timeline 12: October 24, 1804: The Expedition reach the earthlodge villages of the Mandan and the Hidatsa tribes in North Dakota
Lewis and Clark Timeline 13: November 3, 1804: The building of Fort Mandan commenced  alongside the Missouri River, near modern day Washburn, North Dakota.
Lewis and Clark Timeline 14: December 24, 1804: Fort Mandan is completed and Lewis and Clark meet Toussaint Charbonneau who is hired as an interpreter and his Shoshone wife Sacagawea.

Lewis and Clark 1805 Timeline

Lewis and Clark Timeline 15: February 11, 1805: Sacagawea gives birth to Jean Baptiste Charbonneau, the youngest member of the expedition who is called Pompy
Lewis and Clark Timeline 16: April 06, 1805: The members of the Expedition leave Fort Mandan and continue their journey west.
Lewis and Clark Timeline 17: April 25, 1805: They reach Yellowstone River which will take them through North Dakota into Montana.
Lewis and Clark Timeline 18: May 5, 1805: Meriwether Lewis kills the first Grizzly Bear.
Lewis and Clark Timeline 19: May 14, 1805:  Sacagawea proves to be of great help to the explorers. A powerful storm almost overturned one of the boats but Sacagawea retrieves many important articles from the waters including research notes, books and scientific instruments.
Lewis and Clark Timeline 20: May 20, 1805: In recognition of her brave deed, they named the Sacagawea River after the Shoshone heroine.
Lewis and Clark Timeline 21: June 3, 1805: They reach the mouth of the Marias River, Montana and Camp Deposit is established.
Lewis and Clark Timeline 22: June 13, 1805: The expedition arrive at the Great Falls of the Missouri, near present-day Great Falls, Montana. Portaging around the Great Falls takes nearly a month.
Lewis and Clark Timeline 23: August 12, 1805: Meriwether Lewis crosses the Continental Divide at Lemhi Pass, high in the Rocky Mountains. They leave the newly purchased US territory into disputed Oregon Country.
Lewis and Clark Timeline 24: September 1805: The starving Corps of Discovery struggles through most arduous part of their voyage most overland through the Bitterroot Mountains of Idaho.
Lewis and Clark Timeline 25: September 13, 1805: Crossed Lolo Trail in the Bitterroot Mountains
Lewis and Clark Timeline 26: October 1805: Using new canoes built with the help of friendly Nez Perce Indians, the expedition float downstream from the Clearwater River Idaho, the Snake River into the Columbia River in the state of Washington.
Lewis and Clark Timeline 27: November 7, 1805: William Clark wrote in his journal, "Ocian [ocean] in view! O! the joy." (Refer to Lewis and Clark Quotes) The Expedition had reached the Pacific Ocean.
Lewis and Clark Timeline 28: December 7, 1805: The Corps of Discovery built Fort Clatsop for their winter quarters, where they spent a total of 106 days. According to Chief Cliff Snyder of the Chinook Tribe there were only 12 days without rain during their stay.

Lewis and Clark 1806 Timeline

Lewis and Clark Timeline 29: March 23, 1806: The Corps of Discovery left Fort Clatsop to start their journey home.
Lewis and Clark Timeline 30: March 23, 1806 to May 14, 1806: They traveled to Camp Chopunnish in Idaho County, Idaho, along the north bank of the Clearwater River.
Lewis and Clark Timeline 31: June 10, 1806 to June 30, 1806: Traveled to Traveler's Rest (Lolo, Montana) via Lolo Creek. This route was 300 miles shorter than the outward journey.
Lewis and Clark Timeline 32: July 3, 1806: The Corps of Discovery split into 2 groups Clark leading one group up the Bitterroot River and the other group led by Lewis up the Blackfoot River.
Lewis and Clark Timeline 33: July 7, 1806: The Lewis group cross the Continental Divide at the Lewis and Clark Pass
Lewis and Clark Timeline 34: July 27, 1806 – The Blackfoot Indians try to steal Lewis's group's rifles. A fight broke out and two Indians were killed. This is the sole hostile encounter with a Native Indian tribe.
Lewis and Clark Timeline 35: July 25, 1806: Traveling along the Yellowstone River, William Clark climbed a 200-feet tall rock and named it “Pompy’s Tower” after Jean Baptiste, the son of Sacagawea.
Lewis and Clark Timeline 36: August 12, 1806: The two groups rejoin on the Missouri River in present-day North Dakota.
Lewis and Clark Timeline 37: August 14, 1806: The expedition reaches the Mandan villages, the site of their winter encampment at Fort Mandan two years earlier.
Lewis and Clark Timeline 38: September 23, 1806: The Corps of Discovery makes its triumphant return to St. Louis after their historic journey of two years, four months, and ten days.

Lewis and Clark Timeline: Important Dates on their Journey

Journey Timeline Map

The timeline map shows the route taken by the famous explorers on their outward journey across 10 modern day states to the Pacific Ocean. Check the Journey Timeline for the major places of their journey.

1. Missouri
2. Kansas
3. Nebraska
4. Iowa
5. South Dakota
6. North Dakota
7. Montana
8. Idaho
9. Washington
10. Oregon

Lewis and Clark Map - Outward Journey


Lewis and Clark Journey Timeline for kids
  • Fascinating information and interesting facts about the historic Expedition for kids with the short Timeline
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  • Ideal Homework resource: Journey Timeline for 1804, 0805 and 1806
  • History of the famous explorers and their journey
  • The famous voyage of discovery and exploration and important dates for kids via the Journey Timeline
Lewis and Clark Journey Timeline

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