It is unclear exactly how far Bourgmont traveled beyond there; he described the blond-haired Mandans in his journals, so it is likely he reached as far as their villages in present-day North Dakota.
Non está claro exactamente o que pudo viaxar, Bourgmont, máis aló dese punto aínda que describiu as louras mandans nos seus diarios, polo que é probable que chegase ata as súas aldeas na actual Dacota do Norte.