Marc-Théodore Bourrit came of a family which was of French origin but had taken refuge at Geneva for reasons connected with religion. His father was a watchmaker there, and he himself was educated in his native city. He was a good artist and etcher, and also a pastor, so that by reason of his fine voice and love of music he was made (1768) precentor of the church of St Peter (the former cathedral) at Geneva.
This post enabled him to devote himself to the exploration of the Alps, for which he had conceived a great passion ever since an ascent (1761) of the Voirons, near Geneva. In 1775 he made the first ascent of the Buet (3096 m) by the now usual route from the Pierre à Bérard, on which the great flat rock known as the Table au Chantre still preserves his memory. In 1784-1785 he was the first traveller to attempt the ascent of Mont Blanc (not conquered till 1786), but neither then nor later (1788) did he succeed in reaching its summit. On the other hand, he reopened (1787) the route over the Col du Géant (3371 m), which had fallen into oblivion, and travelled also among the mountains of the Valais, of the Bernese Oberland.
Bourrit's writings are composed in a naive, sentimental and rather pompous style, but breathe throughout a most passionate love for the Alps, as wonders of nature, and not as objects of scientific study. His chief works are the Description des glacières de Savoye, 1773 (English translation, Norwich, 1775–1776), the Description des Alpes pennines et rhétiennes (2 vols., 1781), and the Descriptions des cols ou passages des Alpes, (2 vols., 1803), while his Itinéraire de Genève, Lausanne et Chamouni, first published in 1791, went through several editions in his lifetime.
- One or more of the preceding sentences incorporates text from a publication now in the public domain: Coolidge, William (1911). "Bourrit, Marc Théodore". In Chisholm, Hugh. Encyclopædia Britannica. 4 (11th ed.). Cambridge University Press. p. 334.
- Fergus Fleming The Conquest of the Alps 2002 - Page 60 "... ode that eulogised Balmat as the Columbus of the Alps, misspelled Paccard's name, disparaged Saussure as a mere amateur and included several laudatory references to one Marc-Théodore Bourrit. Nobody took much notice. Poor Bourrit."
- Pictures and texts of Description des Alpes Pennines et Rhétiennes by M. T. Bourrit can be found in the database VIATIMAGES
- Pictures and texts of Description des cols ou passages des Alpes by M. T. Bourrit can be found in the database VIATIMAGES
- Pictures and texts of Description des glacières, glaciers et amas de glace du Duché de Savoie by M. T. Bourrit can be found in the database VIATIMAGES
- Pictures and texts of Nouvelle description des glacières, vallées de glace et glaciers qui forment la grande chaîne des Alpes de Suisse, d'Italie et de Savoye by M. T. Bourrit can be found in the database VIATIMAGES