אַחַ֨ד עָשָׂ֥ר יוֹם֙ מֵֽחֹרֵ֔ב דֶּ֖רֶךְ הַר־שֵׂעִ֑יר עַ֖ד קָדֵ֥שׁ בַּרְנֵֽעַ׃
It is eleven days journey from Horeb unto Kadesh-barnea by the way of mount Seir.
Read kabbalistic (mystical) interpretation of Deuteronomy 1:2: and classical mystical sources.