or if all it is a a straight polyline segment (assuming no arcs); one could
draw the polyline, place a point on one end.
select both objects, and make a group out of them...then copy the group as many time as was required...
or without making a group..select the objects...grab hold of one of the grips....hit the SPACEBAR to switch from the STRETCH command, into the COPY command, and then copy as many as was required...
however if it a continuous polyline with arcs...that is in need of a point at a specified distance I would use Divide, or Measure command.