  We present a catalog of distances for 19544 K giants drawn from LAMOST DR8.
Most of them are located in the halo of the Milky Way up to ~120~kpc. There are
15% K giants without SDSS photometry, for which we supplements with Pan-STARRS1
(PS1) photometry calibrated to SDSS photometric system. The possible
contamination of the red clumps/horizontal branch are removed according to
metallicities and colors before the distance determination. Combining the
LAMOST spectroscopic metallicities with the SDSS/PS1 photometry, we estimate
the absolute magnitudes in SDSS $r-$band, the distance moduli, and the
corresponding uncertainties through an Bayesian approach devised by Xue et al.
(2014) for the SEGUE halo K-giants. The typical distance precision is about
11%. The stars in the catalog lie in a region of 4-126 kpc from the Galactic
center, of which with 6, 320 stars beyond 20 kpc and 273 stars beyond 50 kpc,
forming the largest spectroscopic sample of distant tracers in the Milky Way
halo so far.
