A portable grind rail assembly includes a grind rail, two base portions, and two T-sections. Each of the two base portions includes a planar ground-contacting surface for supporting the base portions above a ground surface. Each of the two T-sections is adapted for connecting one of the two base portions with the grind rail for supporting the grind rail above the ground surface. The grind rail is preferably constructed of multiple rail sections that are adapted to be interconnected using a dowel.