Pat Rose, W5OZI said on July 24, from 0046 to 0052z, he
worked five Japanese stations on 6-meters. Pat said that in 18 years
on 6-meters he has never had E-layer propagation to Japan from his
home in Junction, Texas, about 120 miles west of Austin. Pat says
the approximate distance to the Japanese stations is over 10,300 km,
or 6,400 miles, and believes it took six hops off the ionosphere.

Source ARRL Prop News Letter

http://www.arrl.org/w1aw/prop/2003-arlp030.html