Where is the furthest place in space humans have visted?

Answer 1

The furthest any human has ever been from Earth is Lunar orbit, with the Apollo 13 crew (Jim Lovell, Fred Haise, and Jack Swigart) holding the distance record at 400,171 km from Earth. (This is kind of a "booby prize", as they were unable to land on the Moon as planned, but their emergency rescue orbit was slightly higher than the parking orbits used by the other Apollo missions.)

The current distance record for any human-built spacecraft is about 20 billion kilometers from the Sun, held by Voyager 1 (which is still receding, and will remain the record-holder for the foreseeable future; all other distant spacecraft with enough remaining velocity to leave the Solar System ... Voyager 2, Pioneers 10 and 11, and the New Horizons probe ... are moving slowly enough that they will never pass Voyager 1).

Answer 2

The farthest from the surface of the Earth that human beings have ever traveled
is roughly 245 thousand miles, when the crews of the Apollo missions swung
around the far side of the moon in their lunar orbits.

That would have put them roughly 2,200 miles farther from Earth than the
astronauts who actually landed and walked on the near side of the Moon.
The Moon is the only celestial body other than Earth to which humans have
ever gotten anywhere close.

Compared to the nearest to Earth that a few other celestial bodies ever get,
those distances correspond to roughly 1% of the distance to Venus, 0.5% of
the distance to Mars, and 0.07% of the distance to Jupiter.

Nobody has been anywhere near the moon for the past 43 years. Human crews
now spend extended periods aboard the International Space Station ... in an orbit
about 250 miles above the Earth's surface, or roughly 0.1% of the distance to the moon.

Kinda boggles the mind, doesn't it!

Answer 3

The moon. Or perhaps more accurately, the far side of the moon plus the altitude of the lunar mission.