I am usually too tired to stay for the lectures so now I do not know what a benchmark is and what 6x1:00/2:00 means...
I feel bad, but I am going to ask anyhow.
Thanks.

I'm surprised you could get this far into the season without knowing these things, but it's a good question so I'll give it a shot.

The four benchmarks in the USA FIT program are the long runs (walks) that we do through the 26-week training program. The first one was the Helvetia half, and the three others are done at Portland Fit / Vancouver Fit -- 25K (15+ miles), 30K (18.6 miles), 21 miles.

As a member of the Purple group, speedwork should be optional for you so don't sweat it. The one one you mentioned is called a vVO2max workout. After a warmup of at least 10 minutes at an easy pace you do a very hard interval that's 1 minute long, followed by a 2 minute recovery at an easy jogging pace. The purpose of the workout is to improve your speed improving your form and by increasing the stroke volume of your heart's left ventricle. You try to run all 6 speed intervals at the same pace, but it should be very difficult to maintain the same pace for the last two or three speed intervals. That's why the rest intervals are so long.

Some people find it beneficial to use a heart rate monitor for these intervals, but you can get every bit of benefit from the workout using only a basic chronograph watch.