The most widespread species in the genus, it is found in the Andean highlands of Bolivia, northern Chile and southern Peru.

[1] It may also occur in northwestern Argentina, but the taxonomic position of this population is unclear.

[1] This semiaquatic frog is found in and near streams, rivers, waterfalls, lakes and ponds.

[1] Among 16 adult T. marmoratus from Isla del Sol, the largest had a snout-vent length of 7.5 cm (3.0 in).

[2] It is very closely related to the larger and less widespread T. gigas, and they might be conspecific.