system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How far apart is Titan from Earth?

Tony, Strange and Peter didn't spend an awful lot of time in the spaceship which doesn't seem to be traveling at FTL or wormhole. Likewise, the bifrost beam that carried Banner also seemed pretty slow.
gpt
It isn't addressed on-screen, but Word of God is that Guardians of the Galaxy takes place in the Andromeda Galaxy, so that's probably where Titan is.

That's about 2.5 million light-years away, so ... yeah, there's doing some FTL travel.