He studied Medicine at the University of Breslau and at the Humboldt University of Berlin. He traveled or studied in the Alps of Tyrol and the Carpathians in Transylvania. In 1860, he joined the Eulenburg Expedition, a Prussian expedition which visited Ceylon, Japan, Taiwan, Celebes, Java, the Philippines, Siam, Burma between 1860 and 1862. No important work resulted from these travels, for much of Richthofen's records and collections was lost. China was at the time inaccessible owing to the Taiping rebellion, but Richthofen was impressed with the desirability of exploring it. From 1862 to 1868, he worked as a Geologist in the United States, discovering goldfields in California. He then followed up his interest in China by several more trips there, and also to Japan, Burma, and Java. In China he located the dried-up lake bed of Lopnur.

He was appointed professor of geology at the University of Bonn beginning in 1875, but being fully occupied with his work in China he did not take up professorial duties until 1879. He became professor of geography at the University of Leipzig in 1883, and professor of geography at the Friedrich Wilhelm University of Berlin in 1886. He occupied the latter position until his death. His lectures attracted numerous students who subsequently became eminent in geographical work, and in order to keep in touch with them he established his weekly geographical “colloquium.” Among his most famous students was Sven Hedin, the Swedish Explorer. He served as President of the German Geographical Society for many years and founded the Berlin Hydrographical Institute.

He is noted for coining the terms "Seidenstraße" and "Seidenstraßen" = "Silk Road(s)" or "Silk Route(s)" in 1877. He also standardized the practices of chorography and chorology.

Regarding personal names: Freiherr is a former title (translated as Baron). In Germany since 1919, it forms part of family names. The feminine forms are Freifrau and Freiin.