I'm looking at running the sanctioned content (Runeforge pt 3-10) for a party of high level PFS characters.
Would anyone have an eyeball figure for how long it would take to run for a party of four well-built PCs (all L15)? How much quicker if it were a party of six? Any things to be aware of?
16 hours for a party of six. Maybe 12-13 for a party of 4. To get it lower than this, you will have to keep the players moving, and try not to get bogged down in the RP. Its a good adventure though; I definitely recommend it.