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Boechera stricta (B. stricta) is a wild relative of Arabidopsis, occurring in mostly montane regions of western North America. In this article, we assembled the complete mitochondrial (mt) DNA sequence of B. stricta into a circular genome of length 271,601 bp, including 31 protein-coding genes, 21 tRNA genes, and 3 rRNA genes. From the neighbour-joining phylogenetic tree was constructed, based on the 23 conserved protein-coding genes of B. stricta and other 23 plant species, and the phylogenic relationship and evolution position of B. stricta were determined. The complete mt genome would be useful for further investigation of the genotype-by-environment interactions in mitochondria of Boechera.