Parashas Masei · Passuk 33:49 · TT note 2
Chabad.org — English translation + Rashi
Torah Temimah points to Yerushalmi Sheviis 6:1 (TT note on “עַד אָבֵל הַשִּׁטִּים”).
English: “Until Avel HaShittim” — and how much is that? Twelve mil.
Measurement tradition attached to the place-name span.
The distance from Beit HaYeshimot to Avel HaShittim is fixed by tradition at twelve mil — a concrete measure of the final encampment.