I've googled it, and I've come up with nothing.
The wings-level, sea-level stall speed is typically close to 137 knots, apparently.
777 yards. Obviously.
Pilot on CNN tonight said landing for a 777, especially one flying light after burning most fuel, was less than 4000 feet - said there are plenty of strips as long or longer all over the world - training fields, abandoned fields from wars etc etc - said landing could be accomplished with a good on-board GPS system and would not need elaborate on-ground instruments - takeoff would take longer because of more fuel, unless it was under fueled to make a short hop to another field (maybe after being repainted and repurposed????).....
11000 ft. at maximum takeoff weight for the 777-200ER.
I would think the takeoff distance for the lighter 777-200 model at MTOW would be close, if the aircraft was relatively empty (say, just a nuke and aircrew) at approximately 8,000 ft. of runway.
Just a guess, mind you, but that is likely the minimum for in/out flying--although there are others far more expert in this field than I whom I would welcome corrections from.