AllWISE W4 image of the Vel OB1 association showing the positions of the OB runaways with (black triangles) and without an associated bow shock (green triangles). The OB runaways and the potential parent clusters are labelled (white). The dashed red line shows the path of RCW 38 traced back over 5 Myr. This motion can assumed to be representative for the motion of the other young clusters in this association. The blue lines display the path of each OB runaway up to 1 Myr ago. The [KPS2012] MWSC 1594 open cluster is refered to as Cl 1594. For a handful of OB runaways an origin in one the young clusters is likely; most OB runaways seem to originate from the Galactic plane.