the pattern actually calls for 2 skeins of Manos (135 yards). I am using Malabrigo (215 yards) and 1 skein was too short for my taste. I added another skein of Malabrigo, but then other projects called me away and my scarf is currently a UFO. I can measure the length of the first skein tomorrow if no one else knows sooner.
By the way, I used the size 11 needles as called for, but it is very thick. Depending on your tastes and whether you knit tight or loose, you might want to test other needle sizes.
to carmabelle1191, IIRC you pass the slipped stitch back to the left needle, knit through the back loop, then drop off. Search this site for threads on this scarf because someone came up with alternate directions that acheive the same thing but are easier to understand. Once you start doing it, you'll probably see it yourself, but it's been awhile since I've worked on mine.
ps here you go