If you just do a CTRL-A in the Event Browser to select all, at the bottom of that pane will be the cumulative duration of all clips.
Other methods of getting various clip durations:
– Select clip OR range in browser, at bottom of browser is duration
– Select Project, at bottom is duration of entire project
– Select multiple projects in browser, at bottom is total duration
– Select multiple clips in browser (can be non-contiguous), at bottom is total duration
– At bottom of timeline, duration for current project is shown (no clicking required)
– In timeline, doing a range select (R tool) will show duration of range at bottom
– CTRL-D: shows duration of selected clip in timecode window