Theoretically it could put you out of the Galaxy look at the graph for the bajoran wormhole it goes clear across the galaxy.

It is interesting to note that most of the worm holes were unstable at least on one end.

The barzan? wormhole was stable in the Alpha quadrant the ferengi got stranded in the delta quadrant.

Then there is the tachyon propulsion of Barkley and the probe that programed him. Apparently seven of nine used something similar to get into fluidic space.

How about slipstream drive?
Now that was sweet.
Wouldn't have taken long to go between galaxies with that baby.

The borg's trans warp drive which the federation was apparently close to perfecting during kirk's lifetime. Remember the excelsior?

Then there was the guardian of forever and the iconian portal.

Wormholes in Star trek appear to possibly have been created by some super race. We know from the episode where we found out a race had seeded the galaxy with DNA and had apparently died out or evolved into a higher state of pure energy beings, that they found themselves alone in the galaxy.

Perhaps they created the worm holes and then they decayed over the eons that passed in between. To that theme you can add the organians, and some others perhaps even the Q.

Nomad caused the enterprises engines to propel the ship passed warp 11 and off the scale before kirk got him to shut it down, and that was with the engineer doing everything he could to slow the ship down, and they went passed Voyager's "warp ten barrier" they didn't DeEvolve into lizards like paris and janeway did.

So we see some common themes in star trek.

(1) The federations greatest fear of all time was that their machines would become sentient.

(2) It was taken for granted that under normal conditions, if they existed "long enough," a species would evolve into a pure energy state. Rather than simpply cease to exist.

and

(3) Speed barriers existed only for as long as it took for the next episode writer to come up with something new and spectacular.

When you are writing fiction you can reason your way around logic any day of the week.