Unfortunately there's no easy way to split tracks, or view a table of cumulative stats in TopoFusion right now.
You can, of course, right click on any particular track and get the profile window to pop up -- this will be the cumulative stats for only that particular track.
We're working on a better way to view / deal with files such as yours, to be seen in a future release. But as of now some things in TF are better handled with the one file per "trip" modus operandi.
I have so much data that having it in one file wouldn't make much sense. Just curious why you have so much data in a single file. Was it an export from another program, like the Garmin logbook or something?