[USFRIENDINVICTORIA]

About a year away at Warp 5.

Kirk: Warp 5 now.

Scotty: Nay Cap’n, she'll no hold together that long at Warp 5.

[Mmogamer]

It wouldn’t take that long at warp 5. And warp 5 is just below the cruise speed on the TOS Enterprise (warp 6).