I wish I knew the grade percent of the hills I commute on daily. My guess is they're between 5-8%, but they're fairly short - no more than a mile or two.

I haven't given names to the hills, but my weekday commute includes a hill that just goes on and on. At times when I was in better shape, I could make it up the first part of the hill at a steady 8mph+, but these days I'm lucky if I can keep it between 6-8mph. That same hill, going downhill, I don't dare look down at my speedo only because I'm going 45mph+ and the cars don't care that I'm going as fast as they are. The hill has two parts - the first part is the 6-8mph part, and the second part winds thru a neighborhood but steadily climbs higher and higher until I'm at the top of one of the highest hills in town. It's quite a spectacular view from up there.

My weekend commute includes a hill that starts out in a false flat, but then I hit the true climb. Usually I'm able to do that climb at 7-8 mph, then it flattens out into a brief false flat, then the final portion of the climb I'm able to do around 8 mph. The other hill in my weekend commute is probably one of the steepest climbs in town, but it's less than 1/4 mile long and hardly worth mentioning because of how short it is. The downhill portion of that climb is fast enough that I leave my lighting rig on my bike year around so cars don't decide to pull out of the residential street near the bottom.