Adventure paths you to DM / Play

[Suzaku]

I always wanted to play an adventure path that begins higher level than 1 and hopefully last until epic levels.

[Orthos]

I'd recommend the old Dungeon magazine paths for that - Shackled City, Age of Worms, and Savage Tide. With some minor or no adjustment to the early adventures you can start at level 2 fine (my STAP group started at 2 with no adjustments to the book other than beefing up the enemies because it was a Gestalt game) or even level 3 if you're willing to put in a bit of extra work.

They're written for 3.5, but shouldn't take too much trouble to convert to PF.

[DM Azure_Zero]

I actually like the lower levels, and starting at level 1.

[GeraintElberion]

If you play Legacy of Fire then you can follow it up by sandboxing with City of Brass.

I reckon that will get you up to level 23 or 24.

Alternatively, you can follow almost any Adventure Path with Coliseum Morpheuon. Which will also take you to epic levels.

[Richard D Bennett]

My "games I will run someday" notebook on Evernote has an outline for Council of Thieves mashed-up with the Ptolus campaign that runs through the Banewarrens. Replacing Westcrown with Ptolus is actually easier than you might think and opens up a lot of high-level possibilities.