I don't think that anyone had went before them so they were their own guides.
She was Lewis and Clarks guide to the west coast.
Sacagawea acted as a guide for the Lewis and Clark expedition through the Louisiana Territory.
I think you are asking about their native guide, Sacagawea.
louisiana
Lewis and Clark explored the Louisiana purchase with Sacajawea as their guide
she guide Lewis and clark through there journey.
She was their guide. She also translated native languages and made them food for their expedition.
Answer this question…Sacajawea
Their native guides were Sacajawea and Old Tobe. Their guide through the mountains were Old Tobe.
Meriwether Lewis and William Clark led the expedition to explore the Louisiana Territory. They were assisted by a team of explorers, soldiers, and interpreters, including famous figures like Sacagawea, a Shoshone woman who served as a guide and interpreter.
Sacagawea traveled with the American explorers Lewis and Clark. She was their guide when they explored the Louisiana Purchase, which the United states had just bought from France.
lewis and clark