Quad 68
Alternate reality
Quad 68 was a region of space containing Klingon Empire territory. The Klingon homeworld and capital planet Qo'noS was located in sector 70 in quad 68.
In 2259, in the alternate reality, Khan Noonien Singh used a portable transwarp beaming device to flee from his attack on Starfleet Headquarters in San Francisco with a long-range site-to-site transport all the way from the stolen jumpship 208 on Earth to Ketha Province on Qo'noS in quad 68. (Star Trek Into Darkness, display graphic)
According to Star Trek: Star Charts (p.16), a sector quad was a large roughly cubical area of space. Near Federation space a sector quad was a thousand light years in length, nine hundred light years in width, and eight hundred light years in height.