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We present distances to 76 medium-sized molecular clouds and an extralarge-scale one in the second Galactic quadrant ($104.75^\circ <l<150.25^\circ$ and $|b|<5.25^\circ$), 73 of which are accurately measured for the firsttime. Molecular cloud samples are drawn from $l$-$b$-$V$ space ($-95 < V_{\rmLSR}< 25$ \kms) with the density-based spatial clustering of applications withnoise (DBSCAN) algorithm, and distances are measured with thebackground-eliminated extinction-parallax (BEEP) method using extinctions andGaia DR2 parallaxes. The range of measured distances to 76 molecular clouds isfrom 211 to 2631 pc, and the extra large-scale molecular cloud appears to be acoherent structure at about 1 kpc, across about 40\deg\ ($\sim$700 pc) in theGalactic longitude.

Distances to molecular clouds in the second Galactic quadrant