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How long was the Australopithecus afarensis footprint trail at Laetoli?

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Side view illustration of Australopithecus afarensis, an early human ancestor, shown walking upright with a hairy body and ape-like facial features. A scale beside the figure marks 12 inches and 40 centimeters. — Australopithecus Artist's rendering of *Australopithecus afarensis*, which lived from 3.8 to 2.9 million years ago.

The footprint trail at Laetoli is 27.5 meters (90 feet) long.1

These tracks were produced by three individuals who walked at a leisurely pace across moist volcanic ash approximately 3.5 million years ago. The footprints are attributed to Australopithecus afarensis and are considered of monumental importance to the study of human evolution, as they demonstrate that these hominins were already adept, habitual bipeds with a walking pattern remarkably similar to that of modern humans.12