How Long Did La Salle's Voyages Take? Over Two Decades of Exploration

René-Robert Cavelier, Sieur de La Salle, didn't undertake a single "voyage"—he spent over two decades (1666–1687) exploring and attempting to colonize New France for Louis XIV, investing his personal fortune (millions of francs) in the effort.

Timeline of Major Expeditions

• 1666–1669: Arrives in New France; establishes Lachine fur trade post; explores Ohio River region.
• 1669–1670: First major expedition—searches for Northwest Passage; reaches Ohio River, possibly Mississippi.
• 1673–1674: Builds Fort Frontenac (Kingston, ON); controls Lake Ontario fur trade.
• 1678–1682: Great expedition—builds Le Griffon (first sailing vessel on Great Lakes); explores Niagara, Lake Erie, Lake Huron, Lake Michigan; reaches Mississippi via Illinois River.
• 1682: Descends Mississippi to Gulf of Mexico; claims entire basin for France ("Louisiana").
• 1684–1687: Final expedition—attempts to establish colony at Mississippi mouth; lands in Texas (Matagorda Bay); murdered by his own men in 1687.

Total Duration: 21 Years

From arrival in 1666 to death in 1687, La Salle's North American endeavors spanned 21 years—not a single trip, but a lifelong, ultimately tragic campaign to build a French empire in the interior.

Legacy

Despite failure to establish a lasting Gulf colony, La Salle's explorations defined French claims to the Mississippi Valley, shaped the fur trade network, and opened the Great Lakes to European navigation. His "voyage" was a life's work.