I've fought with Premiere's marker implementation for years. I mark so much footage during first playback. Unlike Final Cut & Avid, the process of getting these selects into a timeline is slow and time-consuming. I really wish they could easily be dropped into a timeline as if they were clip in-out points.

Yes, it would be great. In the old days of Final Cut, markers could be used as subclips besides the option to make them in and out too. I was wondering if it has been already implemented, but let's keep praying. ;-)

I agree with this.
For example
Right-click on the marker to bring up the menu below.
Reflect the marker on the IN point
Reflect the marker on the OUT point
Reflect the IN / OUT point of the marker on the IN / OUT point of the timeline

I use a little workaround for creating in and out points based on a spanning marker (which certainly still involves too many steps). Once I select the marker the playhead moves to the start of the marker and I can press "i" to mark the in point and then just nudge the end of the spanning marker with a mouse click and press "o" to set the out point. But I agree both options stated above should just be obvious for adobe to implement, so: MAKE IT HAPPEN!

Actually, I can't believe this is not already a feature. It seems so obvious. Turn a spanning marker into in/out points and turn in/out points into a spanning marker.

I would like to also add that I would like to be able to take a spanning marker and turn the clips, audio, etc. within it into a nest. That would be AMAZING!!!

This last part
( to be able to right click a marker duration and have the option to mark that as an in and out selection.)
would be a real timesaver for me, as I have multiple takes each organized in spanning markers. I could have select timeline on source and by clicking on a marker PR would set in and out points ready to be inserted to main timeline.
Adobe please implement this!

This functionality would be super helpful indeed please make it a feature

Simple function, there is in Adobe Audition, it should also be in Premiere

Highly support this idea!

I second that. Davinci Resolve has this option and I use it all the time there. Over in Premiere it now feels like an essential feature is missing.

I use markers in the source panel and timeline a lot and they are indispensable, but I agree this would be extremely helpful. Three other observations on this subject. 1. Could the marker range endpoint snap to the playhead? 2. Would it be possible to have the ability to select multiple ranged markers from within the source monitor and send them to a timeline? 3. Would it be possible for the navigate to next marker keyboard shortcut to recognize a ranged clip's endpoint as a marker? This would make setting in and out points much simpler. Thanks for all your hard work.

Here here. This would save a good bit of time in aggregate in all situations, but especially when I'm working on a laptop and the Marker dialogue box will often block the notated duration of my In and Out points.