14 May 1804–23 September 1806
Lewis and Clark Expedition
The Corps of Discovery travelled from the Mississippi watershed to the Pacific and back, guided and supported by Indigenous communities along a route already known to them.
Place
Lemhi Pass
A Continental Divide crossing used on the westward journey.
Coordinates44.97, -113.44
Related expeditions
Sources and further reading
- Lewis and Clark National Historic Trail, US National Park Service. Route, chronology, participants, and historical context.
- Wikidata Geographic Coordinates, Wikimedia Foundation and Wikidata contributors. CC0 geographic coordinates used to verify unambiguous named places during the July 2026 coordinate audit. This source supports contemporary point placement only, not historical route or chronology claims.